Open source SEO

Notra

69 · Stable

Asks ChatGPT, Claude and Gemini the questions your buyers ask, and shows whether your brand comes up and who comes up instead.

AGPL-3.0★ 256Last commit yesterday

LibreCrawl

66 · Stable

Website crawler for technical SEO that finds broken links, redirects and missing tags, and exports the results.

Free to useMIT★ 1.0kLast commit 11 days ago

OpenSEO

64 · Stable

SEO suite with keyword research, rank tracking, backlink analysis and site audits, plus an MCP server for AI agents.

Free to useMIT★ 23kLast commit 2 days ago

LibreCrawl

Website crawler for technical SEO that finds broken links, redirects and missing tags, and exports the results.

GitHub

Alternative to

Screaming Frog SEO Spider

Will it still be around?

Stable

Score 66/100

Details

Can a business use it freely?

Free to use

MIT · open source (permissive)

Details

Flat Rate Deploy

Monthly cost

LibreCrawl on OpenTools: $15
Screaming Frog SEO Spider: ~~$581~~

You save each month

$566/mo

97% less than today

Saving from month one

You save

Over 3 years: $20,385
In year one: $6,795

List price checked 8 Oct 2026 · Source · Disclaimer

Bespoke

We set up LibreCrawl for you. You pay once.

You pay $581 a month for Screaming Frog SEO Spider. Setup is $1,200, paid once, and after that LibreCrawl runs for about $162 a month (your server, about $12, plus about $150 of maintenance), so it pays for itself in month 3.

Pays for itself: Month 3$3,831 saved in year one
Setup, paid once: $1,200fixed price, agreed up front
Maintenance: $150/houronly when you ask for it

What we do

Data migrationRecords, files and history moved from Screaming Frog SEO Spider, with a test run before the cut-over
ConfigurationWorkflows, custom fields, roles, permissions and SSO set up for your team
IntegrationsConnected to your CRM, Slack, accounting tools and APIs
MaintenanceUpdates, fixes and admin help when you ask, at $150 an hour
Paid editionsThe vendor's paid features, enabled, with the licence at cost
ComplianceData residency, audit logs, data processing agreements, security questionnaires
TrainingAn admin walkthrough, a runbook and sessions for your team

Total spent, month by monthScreaming Frog SEO SpiderBespoke LibreCrawl

Show as a table

Month	Screaming Frog SEO Spider	Bespoke	Saved so far
Today	$0	$1,200	–
Month 3	$1,744	$1,686	$58
Month 6	$3,488	$2,172	$1,316
Month 9	$5,231	$2,658	$2,573
Month 12	$6,975	$3,144	$3,831
Month 18	$10,463	$4,116	$6,347
Month 24	$13,950	$5,088	$8,862
Month 30	$17,438	$6,060	$11,378
Month 36	$20,925	$7,032	$13,893

Servers run on your own cloud account, paid to your provider. Running cost counts about 1 hours of maintenance a month; you're billed only for hours you ask for. Migration and the other activities are quoted with the setup.

Get a fixed quote

Health score: 66/100

Stable · activity, bus factor and issue responsiveness, from GitHub

Score v2 · How it works

Activity

45% weight

94/100

Last commit 11 days ago (100/100).
82 commits in the past 12 months (83/100).
No GitHub releases published, so release cadence is not scored.

Bus factor

30% weight

23/100

Top contributor wrote 83% of the last 82 commits (past 12 months).
11 people authored those commits.

Responsiveness

25% weight

68/100

69% of all issues are closed (17 open, 38 closed) (65/100).
21 of 30 recent issues got a reply or were closed (70/100).

License

Free to use

MIT · Open source (permissive)

What you need to do

Use, change, host and sell it for any purpose, commercial included, with no license to buy. Keep the copyright notice.

MIT License · Open source (permissive). OSI-approved license with few conditions beyond keeping the copyright notice.

Detected by GitHub as MIT.

GitHub activity

Stars: 1.0k
Forks: 210
Commits, 12 mo: 82; last 11 days ago
Releases: –; none on GitHub
Contributors: 11; 11 in last 82 commits
Open issues: 17; 38 closed

Snapshot from 2026-10-08

Top contributors

Points for pull requests merged into LibreCrawl and reviews of them since 10 October 2025. Building something another user asked for earns more.

Bespoke · we set it up$1,200once Flat Rate Deploy$15/mo