Still alive
Everything else here is past tense — files someone preserved. This page is present tense, and it refuses to take its own word for that: every address, count and message below is fetched by your browser, just now, from the service itself. Nothing about these services is stored in this site. If one does not answer, its entry stays blank rather than telling you something that was true at build time.
tribes1.co
The 1998 game finds its servers through a master server, and Dynamix's originals are long gone — so the browser in a stock copy of Tribes comes up empty. Kigen runs replacements and a web front-end that queries them, so the game's own server list works again. Point your client at the addresses above and the browser fills up; tribes1.co has the setup steps. The master server itself is open source: t1ms-go, Go, Apache-2.0.
Kingdom of Kronos
Starsiege: Tribes running in a browser tab, no install: the site ships an Emscripten/WebAssembly build of the game that loads its real .vol volumes — the same PVOL/LZH container this archive decodes to read mod scripts. It is a port of the game itself rather than of any one mod, so what it can host is not fixed to what it happens to be hosting today. It comes from the admin of the servers listed above, which is what this entry is verified against: those are ordinary Tribes servers, registered with the community masters, and a plain 1998 client can join them too. Anything the servers say up there — credits, downloads, a Discord — is their own text, read live, not ours.
t1.usb.bz
Starsiege: Tribes running in a browser tab, no install — and it is this archive itself, made playable. The page ships only the engine; every volume, mission and terrain it draws comes straight from the archive's own member store — the same JSON API the rest of this site exposes, plus /members/{sha256} — pulled live and content-addressed the moment the engine misses a file. So the maps you fly here are the exact preserved bytes you can browse everywhere else on this site; nothing about the game is baked in. It comes from us, and it is verified against its own service answering above: /api/servers is the live world it can drop you into — ordinary community servers, registered with the masters, that a plain 1998 client can join too.
Know something living that belongs here — a server, a community, an active project? It should be listed.