Winter 2026

OpenSpec

Plan mode for complex features

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What they do

open-source spec framework giving coding agents durable plans

How close to us

2, near

specs act as lasting context for coding agents; plans only, no execution; adjacent to W1

Wedges

  • W1 Trusted 24/7 coding for small startup teams adjacent
L1 Company brain (knows the organisation) 2, clear
L2 Agent team (runs agents, tools, approvals) 0, none
L3 Does and learns (finishes, checks, measures, updates the brain) 0, none

Who buys

Firm size
sme
Buyer type
developer
Role
developers and small teams
UK
not known
Their own description (from YC)

OpenSpec is an open-source, spec-driven framework. We help developers plan complex features by creating lightweight spec documents that serve as durable context for their coding agents.

With 20k+ GitHub stars, we’re one of the leading spec-driven frameworks, used by thousands of developers and teams to plan and ship with the coding agent of their choice.

Our philosophy is simple: keep planning lightweight and iterative, and match how software actually gets built, messy, evolving, and real, without dragging teams into rigid, bureaucratic workflows.

Full teardown

No full teardown yet. On the deep list.

Technical detail
Slug
openspec
Lens hash
179096c479
Pass
screen
Stale
no