TI websites

Official

General

• Texas Instrument (TI)
• Official TI calculator site
• z80 CPU Site

Community

Archives

• ticalc.org
• calcG.org CalcGames

News

• ticalc.org

Forums

• United-TI Forum (UTI Forum)
• MaxCoderz Forum (MC Forum)
• Revsoft Forum (RS Forum)
• Cemetech Forum
• Omnimaga Forum
• Detached Solutions Forum (DS Forum)
• TI-Freakware Forum
• Outside the Box Programming Forum (OTBP Forum)

Wikis

• TI-Basic Developer
• z80 Heaven
• WikiTI (this wiki)

Guides and Tutorials

• technicalc.org
• The Guide
• TI-82 ASM Corner
• [1]
• [z80 in 28 days online]

Resources

• Z80 Docs
• Z80 Bits
• Z80 INFO

Active Teams

• Coders of Tomorrow
• Revolution Software
• MaxCoderz
• Detached Solutions

Inactive Teams

• TIFT
• Void
• SiCoDe
• Radical Software

Various Community Websites

• TI-Freakware

IRC

• #omnimaga
• #unitedti
• #tcpa
• TCPA site

Programmers site (experiments, projects...)

• Brandon Wilson site
• Ben Ryves blog
• Michael Vincent
• James Montelongo experiments
• Sami TI Calculators page
• Dwedit's Website

• Weregoose TI-BASIC archive
• {AP} Site
• kalan_vod Site

French Sites

• ti-fr.com
• ti.bank.free.fr
• ti83.free.fr
• tibank.forumactif.com
• lycos.fr
• tift
• ti-wiki.pbwiki
• yaronet

German Sites

• MobiFiles

Dutch Sites

• TI-Wereld
• Scholieren.be (mostly 'inhabited' by school students, not by programmers)

Projects

3rd party OS

• LIFOS
• LIFOS blog
• Vera
• PongOS
• OS2
• XOS

Others

• z80 assembly API
• CLAP project
• BELL project
• USB8X
• MSD8X
• USBTools
• DoorsCS

Online Tools

• SourceCoder2 (Online TI-BASIC editor, syntax colouring and optimizer)
• TI.ZEWAREN.NET - BETA
• Online Hex Disassembler

Memorable TI Websites

That are no longer online, RIP.

• TI groups discussion (closed in ...)
• Cirrus (merged in UTI)
• Kevtiva (82 TI-BASIC and ASM stuff)
• Alienhead
• Assemblers Coders Zenith

Note: use the wayback machine to see how they were: http://www.archive.org/

Other TI websites lists

• TI-Freakware list