What changed

The point of this page: directories count submissions and never subtract. We publish what we remove, when, and why — so you can tell whether an entry is still worth your time.

30 active · 5 removed or deprecated.

Entry	Status	Changed	Why
AutoGen	deprecated	2025-10	Microsoft moved it to maintenance mode when Agent Framework 1.0 shipped. Still installable and still widely used, but it will never gain the orchestration features that landed in the successor.
Semantic Kernel	deprecated	2026-04	Superseded by Microsoft Agent Framework, which shipped 1.0 on 3 April 2026 and absorbed it. Still runs; no longer receives features.
Postgres MCP (reference server)	deprecated	2025-05	Archived and deprecated, with an unpatched read-only-bypass SQL injection. It holds live database credentials and still installs half a million times a month, which is precisely why dead entries need to be marked rather than merely counted.
Helicone	deprecated	2026-03	Acquired by Mintlify on 3 March 2026 and placed in maintenance mode. Helicone's own acquirer is telling its customers to migrate to another platform, so it stays listed with a warning rather than being presented as a normal choice.
Humanloop	removed	2025-09	Platform sunset on 8 September 2025 after an Anthropic acqui-hire in which no assets or IP changed hands. Because it was closed source, the shutdown left nothing to self-host - the most complete form of disappearance there is.

Entry

Status

Changed

Why

AutoGen

deprecated

2025-10

Microsoft moved it to maintenance mode when Agent Framework 1.0 shipped. Still installable and still widely used, but it will never gain the orchestration features that landed in the successor.

Semantic Kernel

deprecated

2026-04

Superseded by Microsoft Agent Framework, which shipped 1.0 on 3 April 2026 and absorbed it. Still runs; no longer receives features.

Postgres MCP (reference server)

deprecated

2025-05

Archived and deprecated, with an unpatched read-only-bypass SQL injection. It holds live database credentials and still installs half a million times a month, which is precisely why dead entries need to be marked rather than merely counted.

Helicone

deprecated

2026-03

Acquired by Mintlify on 3 March 2026 and placed in maintenance mode. Helicone's own acquirer is telling its customers to migrate to another platform, so it stays listed with a warning rather than being presented as a normal choice.

Humanloop

removed

2025-09

Platform sunset on 8 September 2025 after an Anthropic acqui-hire in which no assets or IP changed hands. Because it was closed source, the shutdown left nothing to self-host - the most complete form of disappearance there is.