Here are some other good website links, sorted by their primary language.
The largest TI program archives on the web, since 1996.
Another active TI-83 Plus ASM/BASIC and Casio PRIZM discussion forum, along with general hardware and computer talk.
General TI calculator help and programming forum, although not as active anymore.
The largest TI-BASIC documentation online, along with tutorials and an help-oriented forum.
Great resource for TI-83/84+ ASM programmers.
-Axe Parser Wiki
Great resource for Axe Parser programmers.
Great resource for TI-Nspire programmers and hackers.
Great resource for Casio PRIZM fx-cg10/20 programmers and hackers.
The source of major releases such as FFTOM, Desolate and the original Grayscale Package, although no longer active.
A smaller and less active TI-83 Plus forum, but still has major projects such as Wabbitcode and WabbitEmu in development.
Home of Ultima V for the 68K and Pokémon Purple project. Although the site is not very active anymore, Pokémon Purple is still being worked on.
A no longer active TI-83 Plus ASM development team and discussion. Home of MirageOS, Omnicalc and PuzzPack.
-Universal Casio Forum
Formerly a Casio programming board, now mainly oriented towards general calculator usage help.
The official Texas Instruments calculator website.
The official Casio calculator website.
The biggest source of TI news on the web. Has an active help and discovery discussion board for both TI and Casio.
-yAronet 68K forums
A large, formerly active TI-89, 92, 92+ and Voyage 200 development and help forum.
The most active Casio discussion on the web, mostly oriented towards the FX-9860G and Algebra FX series.
A z80 and 68k programming team, with a library of games and math tools. Home to an online TI-82, 83 and 85 emulator.