Oh, free software
I want a CLI WebDAV client that's better than cadaver or hdav.
I want a program that can sync an .ics file with a CalDAV server, by dividing it up into events and individually synchronizing each of those. I don't have a clue how deletions would be handled, but that would be nice too. Then I want a program that can synchronize the .ics file with org-mode files.
I want a SIP client that works as well as Twinkle but has the architecture of SFLphone or is a library upon which an arbitrary UI can be constructed.
I want an HTML-rendering library that has callbacks or hooks for security- and privacy-relevant things like cookies and SSL certificates. I want at least one browser built on this library. I want it to support vi-like keybindings.
I want an HTTP(S) proxy that can be dynamically-configured per-client or per-connection through a standardized protocol that web browsers or their plugins can speak. I want it to be able to handle all the relevant things covered by AdBlock Plus, RequestPolicy, and NoScript.
I want HTTPS authentication through Monkeysphere and mod_gnutls.
I want a git-annex backend for Ogg Vorbis files that treat the audio streams independently of the metadata yet stores them together in the same file so that everything behaves as usual but the annex doesn't bloat by 400Go after I run beets.
I want a file transfer queuing system that can work over any sort of transport mechanism, direct or asynchronous, that handles partial transfers and throttling, and is generally magical.
I want all kinds of accounting software improvements.
I want sane PBX software.
I want an OpenStack that doesn't use libvirt for KVM.
I want backup software that behaves some weird hybrid of BoxBackup and Dirvish.
I want a peer-to-peer card- and board-game platform that uses cryptographic assurance.
I want everyone to use YAML instead of XML.
I want a phone that's not running a doomed operating system.
I want lots of other stuff.