Perl modules

Keyring family: keep passwords and sensitive tokens in secure storage (like Gnome Keyring or KDE Wallet).

Keyring::Auto
Pick keyring most suitable for current environment, handle user configuration etc. Also contains API description and examples.
Keyring::KDEWallet
Save passwords to KDE Wallet.
Keyring::Gnome
Save passwords to Gnome Keyring.
Keyring::PwSafe3
Save passwords to Password Safe compatible files.
Keyring::OSXKeychain
Save passwords to OS/X Keychain.
Keyring::Memory
Emergency backend, don’t save anywhere but temporarily cache in memory.

Other modules:

OAuthomatic
My take on OAuth (so far 1.0). Gives better error messages than Net::OAuth, and spawns local micro web-app to lead user through web-based OAuth redirects.

Smaller scripts:

cpan_make_release
Small script I wrote to make releasing new CPAN version easier (more or less obsoleted by Dzil).