CAD Software

1. AutoCAD WS: Create an account to draw, edit and store your CAD drawings online. Share and collaborate and use the mobile app, too.
2. CadStd: This is a well-known completely free 2D drafting package.
3. CloudSCAD: This online tool became so popular that it currently is restricted to registered users. However, you can play with their STL Viewer.
4. Creo Parametric: Creo Parametric is the standard in 3D product design, featuring state-of-the-art productivity tools that promote best practices in design while ensuring compliance with your industry and company standards.
5. FreeCAD: A free open source 2D/3D CAD program that is a work in progress.
6. Google SketchUp: Picture anything in 3D and online.
7. PCB Elegance: Schematics and PCB layout. Free version restricts the number of pins to 200.
8. PowerSHAPE-e: This tool brings together a fully integrated combination of surface modeling, solid modeling, triangle modeling, reverse engineering and decoration techniques.
9. T-FLEX CAD Student Edition: A 2D & 3D parametric CAD version of their commercial product, includes an FE solver and dynamics simulator.
10. TinkerCAD: Tinkercad is a new and faster way of creating designs for your 3D printer.

Calculators

11. Block Wall Calculator: Block Wall Calculator is used to estimate the number of cubic yards required to be filled in a concrete for the given length, width and size.
12. Calculator Edge: This site has about every calculator imaginable, all free to use.
13. Concrete Volume Calculator: Figure the volume for a number of different designs in the drop down menu.
14. Energy Conversion Calculator: No matter which energy you’re using, this tool can convert the measurements for you.
15. Free Mechanical Engineering Online Calculators: This site carries a list of numerous calculators. Scroll down to find CAD listings, too.
16. Oblique Flow Relations Calculator: This calculator computes ratios to free stream values across an oblique shock wave, turn angle, wave angle and associated Mach numbers.
17. Engineering Plastics Online Tools: Three calculators, including a snap-fit design calc, a cost calculator and a cycle time calculator.
18. Open Channel Flow Calculator: Gain access to results for flow depth, Manning’s N, slope, side slope and diameter problems.
19. Pressure Drop Calculator: This tool requires Javascript. Calculate by element of pipe and flow medium.
20. Shaft Speed Calculator: A three-in-one tool. See how fast end easy you can calculate speed having distance and time, how to find distance having time and speed and how to find time having speed and distance.
21. Torque Transmitted by Clutch Calculator: This online tool calculates the maximum torque that can be transmitted by a clutch that is undergoing uniform wear.

Odds and Ends

22. Celestia: This is a free space simulation that allows users to explore the universe in three dimensions.
23. Determine Wire Size: Whether you are doing home electrical repair or on a electrical design job, simply calculate amperage (current) flow through the circuit and then apply the table.
24. Electronic Circuit Simulator: When the applet starts up you will see an animated schematic of a simple LRC circuit.
25. Open Rocket: OpenRocket is an free, fully featured model rocket simulator that allows you to design and simulate your rockets before actually building and flying them.
26. Trac Open Source Project: Trac is an enhanced wiki and issue tracking system for software development projects.

Productivity

NOTE: Some of these products have a free trial period if they aren’t entirely free. Otherwise, check out their payment plans.

27. 14Dayz: A simple web based time tracking tool for groups of loosely connected individuals that collaborate on a professional basis.
28. Basecamp: If you’re organized enough to want a project management tool, Basecamp can serve the purpose.
29. Campfire: Just like instant messaging, but designed exclusively for groups. Share text, code and files in real time.
30. Clocking IT: Plan projects, see schedules, track time and produce extensive reports for your clients.
31. ConceptShare: For engineers, this solution might seem ideal. It’s a more visual way to collaborate, review and markup images, documents and video.
32. Dabbleboard: This free online mind mapping tool allows users to draw different graphs manually. Download files in .PNG format.
33. dotProject: dotProject is a web-based project management application, designed to provide project layout and control functions.
34. Edistorm: This is a different mind mapping tool that works like a workboard with sticky notes. Download results in .xml or PDF formats.
35. FreshBooks: Financial record keeping that is detailed enough to satisfy your accountant. Send invoices a few second after creating your account.
36. JIRA-Greenhopper: GreenHopper adds agile project management to JIRA to easily manage user stories, requirements and development tasks in the same place you track bugs.
37. Joe’s Goals: This simple tool makes tracking goals easy and fun — you can watch your daily score to track your successes.
38. Jumpstart: If you want to plan a Web site for your work, use this free tool to get a jump on your Web project.
39. LessAccounting: An easy-to-use accounting software for small businesses.
40. TimeTracker: This simple tool can keep track of the time you spend on any task.

Engineering Tools Overload

41. Berg Engineering Tools: Save time in performing routine and repetitive calculations or determining technical dimensions and specifications when designing your products with these online apps.
42. efunda: eFunda stands for engineering Fundamentals. Its mission is to create an online destination for the engineering community, where working professionals can quickly find concise and reliable information to meet the majority of their daily reference needs.
43. Engineering.com: This site contains tools, jobs and articles for engineers of every ilk.
44. Environmental Health Safety Freeware: This is a list of freeware that provides tools for unit conversion and engineering calculations.
45. ESA Earthnet Online: This site carries a list of European Space Agency (ESA) software and toolboxes, some open source.
46. Free Satellite Engineering Tools & Software: You need to scroll down the page to find links, which often lead to other links. But, the links work!
47. SABIC Tools: This plastics firm offers engineering tools such as a mini-thermal analysis, a shear rate calc and a project management tool.
48. The Engineering ToolBox: You can find resources, tools and basic information for engineering and for the design of any technical application at this site.
49. UNISIG Tech Engineering Tools: Get your tools for deep-hole drilling.
50. WolframAlpha: Get free online access to the Wolfram|Alpha computational knowledge engine.

Individual Models

Here are blogs devoted to one particular make and model, or even to one model year.

1. 1973 Torino by Ford This blog is a destination for people who love the 1973 Ford Torino and other classic cars of the era.

2. 1960 Impala This is an excellent look at a complete restoration of a 1960 Chevrolet Impala.

3. 69 Camaro Blog This blog’s author gives his opinions and tips on restoring the 1969 Camaro, in his opinion, one of the best cars ever.

4. 1978 MGB See a step-by-step restoration of a 1978 MGB.

5. Muscle Mustangs and Fast Fords It’s all souped-up Mustangs and other fast Fords on this blog. Read about your favorite classic Thunderbird models here.

6. International Edsel Club Devoted to the Ford Edsel, a short-lived but unforgettable car produced from 1958-1960, this blog features pictures and event information.

7. International Thunderbird Club Get all the latest news and events from this club dedicated to preserving classic Thunderbirds.

8. Classic Car News Interesting post about the rebirth of the DeLorean.

9. Triumph Classic Cars I bought an old Triumph Spitfire once, hoping my dad could restore it for me. If we had had Internet access, he might have had a fighting chance after discovering this website.

10. Lotus Classic Cars This blog is devoted to recounting the history of the Lotus brand and providing pictures of many different models.

11. 1985Corvette.com Find articles and tips for restoring your vintage Chevy Corvette at this website.

12. MiniMania Do you love the Mini? You’ll love the many articles on this site.

13. Ford Model T Blog This granddaddy of classic cars deserves its very own blog, and it has one here.

14. Aston Martin Rust Oration Follow the adventures of a British man who restores a vintage Aston Martin V8 in his spare time.

15. Porthole Authority Find all the information you need on classic Ford Thunderbirds, the Chrysler TC, and the “new” Thunderbird from 2002-05.

16. Red Letter Dodge The official Dodge blog combines news about the latest models with articles about Dodge classic cars.

17. The Classic Cougar Network This website provides detailed information on classic Mercury Cougars.

18. Caddyinfo The Caddyinfo blog covers current Cadillac news as well as discusses all Cadillac models from the past.

19. Eurotuner People who love European cars, especially classic Peugeots, will love this blog.

20. LTDworld.com The Ford LTD inspired this blog, complete with photo albums, vintage ads, forums, and articles.

General Classic Car Information

You’ll find news, reviews, and photos on these classic car blogs.

21. All Most All Most tackles the topic of the most expensive classic cars in the world.

22. Automotive News This auto industry news site has several good articles about classic cars.

23. AutoTimeMachine Read detailed entries about “forgotten” or unusual classic cars and see photos as well.

24. CarDomain Blog The editors of CarDomain Blog discuss both contemporary and classic cars on the pages of their blog.

25. Hemmings Blog Hemmings claims to be the “world’s largest” marketplace for collector cars online. Their blog highlights “finds of the day.”

26. JamesSpotting Exotic cars, yachts, and watches are the order of the day at JamesSpotting.

27. Houston Chronicle Cars and Trucks Blog Tim Spell, Houston Chronicle auto columnist, loves classic cars and writes about them on his blog.

28. Muscle Car Blog on Edmunds Karl Brauer blogs about classic muscle cars for Edmunds.com, one of the most well-respected car websites online.

29. HotRides This blog is comprised of the best car blog entries from around the Web.

30. Car News Articles British auto enthusiasts’ website has many good articles about classic cars.

31. Classic American Car History Learn about the history of classic American cars and where you can find classic car parts.

32. cLassic Car Written in both French and English, this classic car website has many reader-submitted car photos and articles.

33. Classic Cars Global There is some serious car eye candy on this blog. Read detailed descriptions and see photos of beautiful classic cars for sale.

34. Cruiseinpix Cruiseinpix is a Ning network where “gearheads meet.” Lots of user photos adorn the blog.

35. DFW Drive Your Dream Blog DFW Drive Your Dream is a company that arranges “dream car tours.” Drive your dream car on a special tour route in the Dallas-Fort Worth area.

36. Jalopnik Jalopnik is a car-obsessed blog. Really obsessed with cars. Searching “classic” brings up all manner of cool retro car ads and reviews of modern recreations.

37. Matt’s Of New York On this blog, get information about upcoming classic car auctions in California, New York, and Florida.

38. Sixties Britain Devoted to the cars, lifestyle, and music of 1960s Britain, this blog has some great photos of rides like the Rover P6 and the Triumph Spitfire.

39. Sports, Custom, and Classic Cars Suite101.com is full of amazing resources when it comes to finding, restoring, and maintaining classic cars.

40. Super Car Registry Blog On this blog, you’ll find reviews of the latest super-cars as well as articles about little-known classics.

41. The Garage Get daily car news, auto racing info, and information for classic car enthusiasts here.

42. Best Car Videos Find some excellent video blogs of people driving classic cars. See your favorites in action!

43. Vintage Motorsport Vintage Motorsport is dedicated to keeping the history of auto racing alive for the next generations.

44. Antique Cars Club AntiqueCarsClub.com writes about classic car types and “lost” classic cars as well as the major makes and models.

45. Autoblog: Timewarp One of the Web’s best known car blogs devotes this page to everything related to classic cars.

46. Auto Evolution A blog that helps you keep up with everything going on in the auto world, including classic car events.

47. Blue Oval News Get the latest news and commentary on everything from the Ford Motor Company.

48. Bullz-Eye Classic Cars Blog Get the latest in auto news and opinions such as “what’s the worst car ever?” from the Bullz-Eye Classic Car Blog.

49. Automotive Gossip This auto blog from the UK covers the current news in the auto world and notes on classic cars.

50. CarDealExpert.com CarDealExpert provides some good tips on determining the value of your classic car.

51. Car Lust Car Lust is an Amazon blog that covers cars that are, quite simply, great. Not necessarily trendy, but great.

52. Classical Drives Very well-educated blog about everything related to classic cars.

53. Classic and Sports Car Classic and Sports Car is the blog of a leading British car magazine by the same name.

54. Classic Car Adventures Beautiful and well-written Canadian classic car blog featuring the “Spring Thaw,” a yearly event featuring the roads of British Columbia.

55. Classic Nation Blog See almost 10,000 pictures of great classic cars at ClassicNation.com.

56. Classic Rallies This website combines news about classic car racing and shows with links to great classic car resources from around the web.

57. New York Times Collectible Cars Page Read insightful articles from Times staffers and see great photos of classic and collectible cars.

58. Spike TV Cars Spike TV cares about cars, and has come up with a list of the top10 classic cars that need to be brought back to life.

59. Thai Car Blog Although directed to the Thai audience, this blog is written mostly in English. Get advice on choosing the right classic car and selecting a good lender.

60. Timeless Rides At Timeless Rides, view free classified ads and read helpful articles about classic cars.

61. It’s Car Stuff It’s Car Stuff is full of useful articles related to cars in general, as well as classic cars.

62. JustLuxe JustLuxe is the wealthy person’s guide to culture, cars, and other expensive things like watches.

63. Leftlane News Leftlane News is a car news and review website that occasionally has classic car articles.

64. Luxist The Luxist does not pretend to care about the state of the economy, fuel prices, or unemployment. It’s all about stuff rich people like, such as classic cars.

65. MyRideIsMe Users submit content about their custom, vintage, and classic cars on this fun blog.

66. Old Car Online Blog Steve White has been blogging about classic cars on this blog since 2009.

67. Piston Heads Piston Heads is a European car blog that discusses classic sports cars and new cars.

68. Jay Leno’s Car Garage Jay Leno of TV fame writes for Popular Mechanics, and discusses some of his vintage car collection.

Practical Information About Classic Cars

Learn more about getting insurance for these unusual vehicles and other tips.

69. Free Car and Truck Information Learn how you can turn the time and investment you’ve spent on your classic car into publicity and even cash.

70. Buy Classic Cars Get good information about the best way to buy a classic car on this blog.

71. Cheap Old Cars For Sale While the title of this blog might make you think that it is all about cheap old cars for sale, you would be at least partly wrong. Learn about maintaining your classic car as well as choosing the right make and model to restore.

72. Auto Appraise Interesting car blog from the auto appraiser’s perspective.

73. Visionale Learn everything you need to know about inspecting classic cars before purchase.

74. Classic Car Insurance Online If you’re worried about insuring your classic car, this blog has you covered with free online quotes.

Restoring Classic Cars

When you decide to restore a classic car to its former glory, you may not have the first idea where to start. That’s where these blogs come in.

75. Auto Restoration 101 Definitely one of the top authorities when it comes to restoring classic cars.

76. Auto Revival This blog is a vast repository of knowledge related to restoring classic cars.

77. Auto Specialties Mechanic Mark Bentow specializes in restoring British classic cars.

78. He Works On Cars A good source for old car manuals.

79. Hot Rod Harry Hot Rod Harry is obsessed with American muscle cars.

80. Classic Cars Restoration Ramzi Saba has a passion for classic cars, no matter what model. He provides a unique perspective as a citizen of Beirut.

81. Spark Plug Wires With enthusiasts for almost everything, it shouldn’t be a surprise that someone loves spark plugs enough to have a whole blog about them. This helpful site discusses ways you can restore and maintain your classic car.

82. 4-Link Suspension This blog gives you the scoop on car suspension systems and parts. Classic car information is included.

83. Frank’s Classic Car Blog At The Amberlight Garage “Frank the Crank” blogs about car repair and other classic car issues. There are many step-by-step photos included.

84. Automotive Artistry An interesting blog by Automotive Artistry, a mechanic shop in Lacey, WA.

85. Autos Craze Get some excellent tips for your classic car restoration on this blog.

86. Ted’s Garage Blog Ted is a mechanic who has some great tips for his readers about how to take care of a classic car engine.

87. Coachbuild Coachbuilding refers to creating a custom-built chassis for a completely classic and unique look.

88. DragTimes.com For those who wish to make their classic cars go as fast as humanly possible, there is DragTimes.com, where you can brag about it.

89. Grease Girl Grease Girl blogs about her 1951 Studebaker as well as lots of other classic cars.

90. The Guild of Automotive Restorers This is a professional organization that focuses on the quality restoration of cars.

91. SMD-Strike Lightnin’ Bikes This is a beginner’s guide to auto restoration.

92. Mr. Mark Aquino, Classic Car Whisperer Excellent video blog also has podcasts giving the home mechanic tips on restoring classic cars.

93. Automotive Care Learn how to care for your classic car on this blog.

94. Old Car Blog Rusty Petrovic writes detailed articles about restoration of classic and antique vehicles on his blog.

95. Second Chance Garage This blog is an excellent resource for learning how to restore classic cars.

The Car As Cultural Icon

These classic car blogs celebrate the beauty of classic cars, whether in ads, photographs, or even after recycling into art pieces.

96. Collector Car Ads Blog An excellent blog with classic car culture, photos, and vintage press releases about cars.

97. ChromeFin Rob Johnson celebrates the car as art in his blog ChromeFin.

98. eautomobilia.com A great place to find auto collectible news and to shop for car models, car books, and other cool stuff.

99. Just For The Art of It Cool art pieces made from recycled car parts make this a fun blog for the classic car lover.

1.) RailsNW

Beyond the highly informative blog, fans of all things train have a photo album where they can browse the latest images of their favorite vehicles.

2.) Zug & Eisenbahn Blog

With a little bit of help from Google Translate, anyone wanting to learn more about trains in Europe should head over to this informative German blog.

3.) Railways of the world

Photography, videos and other media involving railroads comprise the entirety of this blog, which sends readers all over the world to explore the ins and outs of their favorite hobby.

4.) VTA Watch

Public transportation beyond trains get covered here as well, allowing rail enthusiasts to see how their beloved method of transportation compares and contrasts with others.

5.) Amtrack Tracking for My Commute Between New York City and Philadelphia

Though limited in scope, the painstakingly detailed Amtrack Tracking blog still has plenty to offer the impassioned train fan.

6.) dogcaught

dogcaught boasts some of the loveliest, most dramatic photographs of trains and railroads – even non-hobbyists can still appreciate this blog.

7.) Interacting with Miniature Railroading

One does not necessarily have to assemble model trains as a hobby to appreciate all the neat valuable lessons on history and technology.

8.) Tom Nanos’ Railroad Photography Blog

Another fantastic resource for train and photography enthusiasts alike looking for more than a few good pictures.

9.) The Railroad Blog

American railroads boast a rich and controversial history – hence why so many people find them absolutely fascinating – and Gene Bowker chronicles it alongside his travels on his very cool blog.

10.) California High Speed Rail Blog

The frequently-updated CHSRB focuses on exactly what the title claims. All the technologies, policies and changes to the way high speed rails operate in California.

11.) Mike’s Railroad Blog

Model train builders and railroad enthusiasts both can appreciate Mike Jobe’s inquiries into the many subjects that comprise their hobby.

12.) Trains For America

Get politically involved by following the politics that impact adding safer, more efficient trains to the American infrastructure.

13.) About.com: Model Railroad Trains

Marvel at all the latest and greatest news and projects from within the model railroading community, which obviously pulls its inspiration from far larger sources.

14.) News From The Naugy

Everyone who derives enjoyment from any facet of trains must absolutely bookmark the official blog of the Railroad Museum of New England.

15.) Railroad Photography by Chase Gunnoe

Although Chase Gunnoe’s blog is relatively new to the scene, his cadre of fantastic photographs definitely deserve attention.

16.) FL9

One of the more popular, currently active blogs for train enthusiasts, FL9 covers a nice, wide spectrum of railroad topics.

17.) The Source

Metro constructs rail lines and other modes of public transportation, and their blog keeps fans of trains, buses and more updated on their happenings.

18.) Blogs at Trainboard.com

Over 245 blogs devote themselves to discussing the ins and outs of model trains, travels and other topics – though mostly the former.

19.) Market Street Railway

This San Francisco railroad played a huge role in the city’s history, and its citizens work tirelessly to keep it preserved for future generations to learn from and enjoy.

20.) The Transport Politic

Local and national governing bodies dictate the status of rail lines and other modes of public transportation, and this blog keeps track of all the latest developments.

21.) Midwest High Speed Rail

Learn about the news, policies and trends that are currently shaping the high speed rail lines in the Midwestern region of the United States.

22.) The High Line

The City of New York discovered a very creative way to re-appropriate an old elevated rail line, which pleased many Manhattan residents.

23.) Rail Life

Read Rail Life to stay informed on how the trains in Phoenix have helped the surrounding communities grow and stay connected.

24.) Tampa Rail

Another blog dedicated to the social and political ramifications of public transportation, this time emphasizing Tampa.

25.) Model Trains and Model Railroad Help

As the title promises, model train enthusiasts have an excellent resource for questions both big and small.

26.) Railway Eye

From the United Kingdom comes Railway Eye, an amazingly thorough and educational resource on how their trains currently operate.

27.) Mid-Continent Railway Museum Blog

The staff at the MCRM share their knowledge of trains and railroads with a community eager to hear what they have to say.

28.) Blogs at MyProgressiveRailroad.com

A community of train enthusiasts gather online to discuss their passion through blogs, forums and other networking opportunities.

29.) JMTN Blog

Model train hobbyists interested in working on Japanese models may find this blog of great use.

30.) Illinois Railway Museum Blog

Illinois Railway Museum also keeps a blog of its own, with plenty of technical and historical information for curious visitors to absorb.

31.) The Model Railways of Chris Nevard

Chris Nevard’s amazing photography perfectly highlights all the love and care that goes into his model trains and railways.

32.) ITF Railway News Blog

Follow the International Transport Federation’s blog emphasizing worldwide railroad news for all the newest developments in this area of public transportation.

33.) Rail Express

Rail Express magazine offers everything the model and full-sized train enthusiast needs to learn more about their hobby.

34.) The Overhead Wire

Public transportation is the name of the game at The Overhead Wire, which mainly looks at the social, political and economic ramifications of electric and high-speed trains.

35.) NARP Blog

Americans want a viable train system, banding together to create the National Association of Railroad Passengers to get their points across.

36.) Railway Labor Act Blog

It may not update as often as others listed here, but the Railway Labor Act Blog is worthwhile reading for train enthusiasts who love politics.

37.) Seahawk’s Railway Modeling

Nigel Burkin opens up his workbench to an international audience, keeping them updated about his latest forays into railroad models.

38.) Infrastructurist

Trains, power grids and other essentials make up Infrastructurist, which allows readers to analyze intersections between the different technologies that keep society moving forward.

39.) petes blog

Photographs of both real and model trains get featured here at petes blog, but much of it deals with project progression.

40.) National Railway Museum Blog

As the largest railroad museum in the world, the NRM has plenty of excellent research available to share with its readership.

41.) HSR Updates

Fans of high-speed rails hoping to follow the latest news on their developments across the United States need to subscribe to this RSS feed.

42.) Caltrain HSR Compatibility Blog

This blog obviously centers around high-speed rail issues in California, but the challenge it faces in integrating them with pre-existing trains is common to many areas.

43.) Model Railroad Hobbyist Magazine

Several train model enthusiasts gather here to share both their projects and their thoughts on a highly creative and technical pursuit.

44.) Eurail Blog

American Benjamin Thomas kept a public log of his travels through Europe on the Eurail system. Though updates stopped in February 2010, those who enjoy exploring and trains can still get a lot out of his writings.

45.) The New Somerset and Dorset Railway Blog

Somerset and Dorset residents and politicians pool their resources in an attempt to get their old, abandoned railroad up and running again.

46.) The Elmwood & Marigny River

Keep up with the progress of one incredibly ambitious N-Scale Union Pacific project currently underway in New Orleans.

47.) The Telltale Rail

Rail Europe’s official blog caters to audiences who love both trains and travel with equal enthusiasm.

48.) Tweetsie Railroad Blog

A Wild West theme park has sprung up alongside North Carolina’s Tweetsie Railroad, and the owners and staff members do their best to promote its history with fun events – including some specifically targeting train enthusiasts.

49.) Railway Misadventures

Train travel, history and model building collide in one simultaneously endearing and informative resource.

50.) American-Rails.com Blog

Readers hoping to research the history of the American railway system will love this one-stop shop for all their locomotive needs.

Trains have captured humanity’s fascination for centuries, with everything from old steam locomotives to today’s high speed rails boasting their own fair share of fans. Thanks to the internet, railroad enthusiasts can network with one another and exchange tales of travel, history, policies, engineering and model building. All of these blogs have a plethora of amazing things to share with the community and deserve consideration by anyone who finds trains absolutely incredible.