On to the tools...
On May 29th, CCleaner 2.08.588 was released. CCleaner is a freeware system optimization and privacy tool. It removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space.
On May 28th, OpenSSL 0.9.8h was released. Two moderate severity security flaws have been fixed.
On May 23rd, Foxit Reader 2.3.2923 was released. Foxit Reader is a free PDF document viewer and printer, with incredible small size, breezing-fast launch speed and rich feature set. Foxit Reader supports Windows Me/2000/XP/2003/Vista. Its core function is compatible with PDF Standard 1.7. This release addresses a highly critical buffer overflow vulnerability.
On May 21st, Filezilla 3.0.10 was released. Precompiled binaries available from filezilla-project.org now link against GnuTLS 2.2.5 due to security vulnerabilities in previous GnuTLS versions.
On May 19th, Michele Dallachiesa released rtpBreak 1.3a. rtpBreak detects, reconstructs and analyzes any RTP [rfc1889] session through heuristics over the UDP network traffic. It works well with SIP, H.323, SCCP and any other signaling protocol. Check the changelog for all the details.
On May 17th, Pidgin 2.4.2 was released. Pidgin is a multi-protocol Instant Messaging client that allows you to use all of your IM accounts at once. Check the changelog for all the details.