KeePass is a light-weight and easy-to-use password manager that removes the need for you to remember many different passwords and makes it more feasible to use different passwords for each account. It manages your passwords in a secure database encrypted with AES and Twofish, which is locked with one master key or a key file.
mujMail is a powerful and graphically atractive email client for mobile devices. Its operations are multithreaded, so you can send mail, retrieve mail from multiple mailboxes, and change settings simultaneously. It uses RMS to store mail messages persistently on the device, so don't have to connect to a server to read old mail. It has the unique ability to redownload a damaged message or body part and repair it.
JLearnItME is a multilingual translator for mobile phones. It includes15 languages: English, French, Spanish, Dutch, German, Italian, Hebrew, Portuguese, Swedish, Danish, Norwegian, Hungarian, Russian, Latin and Czech. The same dictionary can translate from any language to any language (e.g. English-French and French-English). It takes only 2.0MB for the 15 languages. It works on any mobile that accepts Java applications larger than 2.0MB. The user interface is available in English, French, Dutch, German, Italian, and Czech. You can create your own dictionary with JLearnIt (e.g. only French - Italian). It browses the nearest words if you do not find a translation.