Alternatives

Swimm alternatives: code documentation and codebase Q&A tools (2026)

For teams who looked at Swimm for code documentation and aren’t sure it fits: tools that keep docs honest, and tools that skip the writing and answer from the code and its history, then do the follow-up.

For teams who want living docs, or answers instead of docs · Updated 11 November 2026

Swimm started as docs that stay coupled to code, with IDE plugins for VS Code and JetBrains and a check on each PR. Today it sells modernization as a delivered service: its expert teams map a large legacy system (COBOL, mainframe and modern stacks), build the new application and make the code ready for AI coding agents, with on-prem and air-gapped deployment. Its pricing page is gone; you book a scoping call. If you are a 10–50 person product team, that may be more than you need. Here are the alternatives, including ours.

First, decide whether you want docs or answers

Swimm’s original bet is that you write docs and the tool keeps them honest. The other tools here skip writing: they read your code, PRs and chat and answer questions directly. If your auditors or customers need written documentation, you still want a docs tool. If what hurts is new engineers asking “why is it like this?”, you may want answers. Enhanciar goes one step further: after the answer it drafts the follow-up (a ticket, a reply, a doc) for a person to approve, and reviews pull requests on repos you turn it on for.

When to pick Swimm instead of Enhanciar

You need on-prem or air-gapped deployment. Swimm offers both; Enhanciar is hosted only.
You’re modernising a large legacy system (COBOL, JCL, PL/I, mainframe) and want a vendor with engineers on the project, not just software.
You want written docs that live in the repo and are checked against the code on every PR.
You want explanations inside VS Code or JetBrains without an AI agent in between.
You need SOC 2 and ISO 27001 from the vendor today.

When Enhanciar fits

You’d rather ask than write. Enhanciar reads commits, PRs, review comments, Slack and docs, and answers in plain language with the file:line and the PR or message behind each answer.
It also keeps a wiki of what it learned that you can read yourself.
Does the follow-up. The ticket, reply, doc or calendar event is drafted for a person to approve; pull-request review posts on its own once you turn it on for a repo.
Answers come on the web, in Slack, and to AI agents over MCP, and pricing is public.

Comparison

Six tools, side by side.

Tool	What it does	Where it answers	Cites PRs?	Pricing (as of Nov 2026)	Self-hosting
Swimm	Code-coupled docs; now sells modernization of large legacy estates as a delivered service (source)	IDE (VS Code, JetBrains), web, feeds AI tools via MCP (docs)	Checks docs against code on PRs; not a PR-history Q&A tool	Not public; the old pricing page now opens a “How it works” page that offers a scoping call (source)	Yes: on-prem and air-gapped
Enhanciar	Answers “why is this code like this?” from code, PRs, review comments, Slack and docs; drafts the follow-up (ticket, reply, doc) for you to approve; reviews pull requests on repos you turn it on for	Web, Slack, MCP (Claude Code, Cursor)	Yes: file:line plus the PR, review comment or Slack message	$35 per person/mo (cancel anytime), or $315 per person/year paid once, bring your own LLM key, $0 inference markup. Open sign-up, paid plans	No; hosted
Unblocked	Codebase Q&A and a context layer for AI agents across code, conversations, issues and docs (source); also AI code review and the Unblocked Code agent	Web, Mac app, Slack, Microsoft Teams, MCP, CLI, API (source)	Says “every answer ships with source links”	$29/user/mo annual or $35 monthly; Enterprise custom; 21-day free trial (source)	On-prem options on Enterprise
Sourcegraph (Cody)	Enterprise code search, Deep Search and Cody; Cody Free/Pro ended July 2025 (source)	Web, IDE, MCP server, API, CLI	Cites code; built around search, not PR discussions	Enterprise from $16,000/yr minimum (source)	Yes: self-hosted or single-tenant cloud
Glean	Company-wide enterprise search and assistant; its GitHub connector indexes code, PRs, reviews and comments (source)	Web, Slack, MCP (docs)	References source documents, including PRs	Not published; sales-led (source)	Not stated on pricing page
Greptile	Mainly AI pull-request review now; codebase context over MCP (source)	PR comments, MCP (Cursor, Claude Code, VS Code, Codex)	Reviews PRs; not a history-of-decisions tool	Free Starter (1 dev, 50 credits a month); Pro $1 per credit, no seat fees; Enterprise custom (source)	Enterprise only

Competitor details come from each vendor’s public pages as of November 2026 and are summarised, not quoted. Prices change; check the linked page before you buy. If we got something wrong, email us and we’ll fix it. For plain written docs, static-site tools like Docusaurus, MkDocs or GitBook are also common Swimm alternatives. They don’t read your code, so they won’t tell you when a doc goes stale.

Beyond answers

Who does the follow-up.

Tool	Takes actions	Reviews pull requests
Swimm	—	Checks docs against code on PRs; not a code review
Enhanciar	Yes, you approve first: Jira, Linear and GitHub issues, Slack posts, Gmail drafts, calendar events, Notion pages, Zendesk notes	Yes, posted on the PR with the whole codebase as context, on repos you turn it on for
Unblocked	Yes, you confirm the scope first: Unblocked Code, a coding agent, returns a draft pull request (source)	Yes, inline comments on each PR once turned on (source)
Sourcegraph (Cody)	—	—
Glean	—	—
Greptile	—	Yes, its main job

A dash means the vendor’s public pages we checked do not describe it; it is not a claim that the feature is missing.

Then hand it the follow-up

Search finds the page. A brain does the next step.

After the answer, say what you need. It drafts the work and waits in your Actions queue for a person to approve.

Review this PR Turn these notes into Linear tickets Draft the reply to Acme Add it to the calendar Write the decision up in Notion Post the summary to #product

Orange dot: waits for your approval. Teal dot: pull-request review posts on its own, only on repos where you turn it on.

Setup

Sign up at enhanciar.in, then add your model key.
Connect GitHub. If you already have Swimm docs in the repo as Markdown, they’re ingested with the code, so the work you put into them isn’t lost.
Connect Slack and your docs tool (Notion or Google Drive) so the answers can reach the discussions, not just the code.
Take the questions your Swimm docs were meant to answer and ask them. Where the answer is thin, that’s a gap in the written record, not just in the tool.

What Enhanciar costs

It is $35 per person a month (cancel anytime), or $315 per person a year paid once, which works out to about $26 a month. You bring your own model key (Anthropic, OpenAI, Google or a compatible provider) and pay that provider directly; Enhanciar adds $0 on tokens. Sign-up is open: you pick a paid plan (no free trial) and get started right away. There is no self-hosted version.

FAQ

Things people ask.

What is a good alternative to Swimm?

For written docs coupled to code, few tools do exactly what Swimm does. For answering codebase questions without writing docs, Enhanciar or Unblocked. For code search at enterprise scale, Sourcegraph.

How much does Swimm cost?

As of November 2026 Swimm doesn't publish plan prices. Its old pricing page now opens a “How it works” page that offers a scoping call instead of a price list (source).

Does Swimm have IDE plugins?

Yes, for VS Code and JetBrains (docs).

How do we keep code documentation from going out of date?

Either couple docs to code and check them on each PR (Swimm's approach), or stop relying on hand-written docs for the “why” and answer from the history itself: PRs, reviews and chat, which are written at the time of the decision. (Asked in: Ask HN: How do you organize software documentation at work?)

Is there a Swimm alternative that works on-prem?

Sourcegraph can be self-hosted, and Unblocked and Greptile offer self-hosting on Enterprise plans. Enhanciar does not.

Can AI tools explain why the code was written this way?

Only if they can see where the reason was written down: the PR description, the review thread, the ticket or the Slack message. Tools that read only the code can describe what it does, not why. (Asked in: Ask HN: How to understand the large codebase of an open-source project?)

Get started

Ask instead of writing the doc.

Sign-up is open. Pick a plan, add your own AI key and connect your first source.

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