K-9 Mail is an open source email client with support for multiple accounts, search, IMAP push email, multi-folder sync, flagging, filing, signatures.

MailStore lets you archive your private email from almost any email source and search through them extremely quickly.

Dameware remote support, remote control, and remote IT administration tools.

SquirrelMail provides both a web-based email client and a proxy server for the IMAP protocol.

Mailfence is a web-based email service that offers OpenPGP based end-to-end encryption and digital signatures.

XE (XE Currency) is an online currency converter.