56. jVLT
The Java Vocabulary Learning Tool, aka jVLT, aims to help users learn vocabulary for new languages. You can make up your own cardset or use the pre-built sets to learn French, English, Spanish, Thai, Chinese, German, Czech, Finnish or Russian. Operating System: Windows, Linux, OS X
57. Parley
This app can serve as both a Chinese-English dictionary and a flashcard system for mastering vocabulary. It includes pronunciation, translation and contextual information for more than 26,000 modern Chinese words and concepts. Operating System: Windows, Linux, OS X
59. Zkanji
Zkanji is an elaborate English-Japanese dictionary. Included features can help you learn to write Japanese characters, study vocabulary or find meanings for words you don't know. Operating System: Windows
60. ZWDisplay
ZWDisplay helps those studying Chinese learn to pronounce Chinese words and read Chinese text. Clicking the Chinese characters displays a pinyin pronunciation guide and an English translation. Operating System: Linux
61. Brain Workshop
Research suggests that dual n-back activities can improve working memory and fluid intelligence, and they also seem to help some ADHD/ADD sufferers. Downloaded more than 384,000 times, Brain Workshop lets you give your brain a workout by trying dual n-back exercises for yourself. Operating System: Windows, Linux, OS X
62. CoolReader
If your resolution was to read more, this app can help. CoolReader lets you read e-books on your desktop, laptop or Android device. Operating System: Windows, Linux, OS X
63. FlashQard
This learning tool is founded on two basic principles: different cards for different purposes and the Leitner System. Developed in the 1970s, the Leitner System is a proven methodology for spending more time on more difficult material and less time on materials that's already been mastered. As with many of the flashcard-type apps, this app lets you create your own cards or download sets that have already been created. Operating System: Windows, Linux
64. Genius
If you need to memorize something—anything—Genius can help. It's a spaced repetition flashcard program that can help you pass a test, master a subject, prepare for a speech and more. Operating System: OS X
Another flashcard-type study aid, The Mnemosyne Project relies on a sophisticated algorithm to determine which card shows up when. Users also have the option of transmitting their data and progress to the project's owners, who are conducting a research project about the nature of memory. Operating System: Windows, Linux, OS X, Android
66. Pauker
This flashcard app claims to help strengthen your ultra-short-term, short-term, and long-term memory. You can make your own cards if you want to learn something in particular, or you can use one of the many pre-written lessons, which include foreign languages, states/provinces and capitals, chemical elements, multiplication tables, musical terms and even European license plates. Operating System: Windows, Linux, OS X.
67. OpenCourseWare
The Open Courseware Consortium offers links to hundreds of "open source" university classes. Study nearly any subject you want with materials from institutions like MIT, Johns Hopkins, University of Michigan, University of California and dozens of others. Operating System: OS Independent
68. BibleTime
The BibleTime free Bible study software includes data from more than 100 Bibles, commentaries and other reference materials. It's a good alternative to similar commercial software which can cost hundreds of dollars. Operating System: Windows, Linux, OS X
69. Xiphos
This app works much like BibleTime and even links to the same set of free reference materials. However, Xiphos' modular design allows for user-built add-ons, including some that add journaling and prayer list features. Operating System: Windows, Linux
70. Zekr
Zekr brings the text of the Qu'ran to your PC with advanced search, read aloud and other functions. It's open source because the project owners believe you should "never profit off the prophet." Operating System: Windows, Linux, OS X
71. Firefox
One of the most well-known open source projects, Mozilla's Firefox browser boasts fast performance, personalization capabilities, and good security. Now it also comes in mobile versions, including a version optimized for tablets. Operating System: Windows, Linux, OS X, Android
72. OpenOffice.org
Now an Apache Foundation project, OpenOffice.org offers an office productivity suite that reads and saves in Microsoft Office formats. It includes a word processer, spreadsheets, presentations, database and graphics applications. Operating System: Windows, Linux, OS X
73. OpenDisc
This project combines many of the most popular open source apps for Windows into one package. It includes LibreOffice, Firefox, Celestia, The Gimp, Inkscape, Dia, and many other very good open source progams. Operating System: Windows
74. PortableApps.com
This project also collects a ton of open source apps—only this time the apps are formatted so that you can put them on a USB thumb drive and take them with you wherever you go. The standard download comes with some of the most popular open source apps, but the site also includes a library of hundreds of other apps that you can add to your portable drive. Operating System: Windows
75. Ubuntu
Used by 20 million people every day, Ubuntu is one of the most popular Linux distributions and one of the most user-friendly to people who are switching from Windows or a Mac. If you have an older PC sitting around, it's easy to install Ubuntu to take it for a test drive—and it comes with a huge library of free apps.