open-seo

Open source alternative to Semrush, Ahrefs and SE Ranking

24.3K stars
MIT
Active this week
Last commit 2 days ago

Last verified Oct 20, 2026

Analyze organic search performance with keyword research, backlink tracking, and site audits. Self-hosted SEO platform with pay-as-you-go pricing.

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Read the full breakdownWho it is for, how it works, trade-offs, the quick start and the FAQ

who it's for

Who open-seo is for#

Indie developers building content sites

OpenSEO gives you keyword research and rank tracking without the $99+ monthly cost of Ahrefs. You can research 20 keywords before writing a blog post for $0.40 in DataForSEO credits, track rankings weekly for your top 50 keywords at $1 per week, and audit your site quarterly. Self-hosting keeps costs under $10 per month for typical solo use.

Skip if:

You need Semrush's content marketing suite (topic research, SEO writing assistant, social media tools) or you publish so frequently that the hosted version's $10/month subscription is simpler than managing DataForSEO credits yourself.

Small agencies running SEO for 5 to 20 clients

Agencies can self-host one OpenSEO instance and run keyword research, backlink audits, and rank tracking for all clients under a single DataForSEO account. Costs scale with usage (each client audit might cost $2 to $5 in API credits) instead of per-seat licensing. Export reports to PDF or JSON for client deliverables. The MIT license allows white-labeling if you fork the codebase.

Skip if:

Your clients expect enterprise-grade reporting dashboards with social media integration and advertising insights. OpenSEO covers core SEO data but lacks the bundled marketing tools Semrush offers. If you need those for client deliverables, OpenSEO is a supplement, not a full replacement.

AI agent developers building SEO-aware content pipelines

The MCP server integration means your AI agent can query real keyword data, competitor backlinks, and SERP rankings as part of its research phase. Build a content pipeline where Claude Code researches keywords, drafts an outline based on top-ranking competitors, and saves the keyword list to OpenSEO for rank tracking. Pre-built agent skills for keyword clustering and SERP analysis are included.

Skip if:

Your content pipeline does not involve AI agents with MCP support (Claude Code, OpenClaw, Hermes). If you use a different agent framework or prefer manual SEO research, the MCP integration is not a deciding factor. The web UI works fine without agents.

Developers tracking AI visibility for their products

OpenSEO's AI visibility feature monitors how often GPT-4, Claude, or other models cite your domain in responses. Run test prompts ("best open source CRM") across models to see if your product appears and what context the model provides. Track citation frequency over time as an early signal for organic reach. No other SEO tool offers this feature as of August 2026.

Skip if:

Your product is not consumer-facing or your target audience does not use AI models for product research. AI visibility tracking is a forward-looking metric; if your growth channels are traditional (organic search, paid ads, word of mouth), keyword rank tracking and backlinks matter more.

the problem

The problem it solves#

SEO tools from Semrush and Ahrefs charge $100 to $300 per month for subscriptions that bundle features most developers never use. You pay per seat whether you run one site or twenty, and all your keyword research and backlink data lives on their servers. For solo developers and small agencies, this pricing model is backwards: you need keyword difficulty scores and backlink graphs for specific projects, not an always-on marketing suite. Building custom scripts on top of DataForSEO or Moz APIs works until the API changes, at which point your scraper breaks and your workflow stops. The alternative is paying for enterprise bloat or going without real SEO data entirely.

how open-seo solves it

How it solves it#

Keyword research with live SERP data

Query DataForSEO's keyword database for search volume, difficulty scores (0 to 100), and intent classification (informational, commercial, transactional). Results include live SERP snapshots showing current top 10 rankings, so you see what actually ranks before you write. Cluster keywords by semantic similarity to group content ideas. Save keyword lists to your workspace for rank tracking later.

Backlink and referring domain analysis

Inspect backlinks for any domain with anchor text, link quality scores, and referring domain counts. Filter by dofollow/nofollow, link type (text, image, redirect), and domain authority proxies. Export backlink graphs to CSV for link-building outreach. Backlink data pulls from DataForSEO's crawl index, which covers billions of pages and updates weekly.

Rank tracking over time

Track keyword positions for your domains daily or weekly. Set up tracking lists from saved keywords or import CSV batches. Position history charts show ranking movement, and you can correlate drops with site changes or algorithm updates. Tracking costs depend on DataForSEO's pricing (typically $0.02 per keyword check).

Technical site audits

Crawl your site to surface broken links, missing meta descriptions, slow-loading pages, and duplicate content. The crawler follows internal links, checks HTTP status codes, validates structured data, and flags common SEO issues (missing H1, thin content, redirect chains). Audit reports export to JSON or PDF for client handoffs.

AI visibility and citation tracking

Monitor how often AI models like GPT-4 or Claude cite your domain in responses. Run test prompts across models to see which ones surface your content and what context they provide. Track citations over time to measure AI search visibility as a leading indicator for organic reach. This feature is unique to OpenSEO and not available in Semrush or Ahrefs.

MCP server for AI agent integration

OpenSEO exposes a Model Context Protocol server so AI agents like Claude Code, OpenClaw, or Hermes can query SEO data directly. Agents can research keywords, pull backlink reports, or run audits as part of their workflow, with results saved to your workspace. Pre-built agent skills guide common tasks (keyword clustering, competitor analysis). No Puppeteer or custom scraper setup required.

strengths · trade-offs

Strengths and trade-offs#

Strengths

Pay-as-you-go pricing with no subscription lock-inYou bring your own DataForSEO API key and pay only for the queries you run. A typical keyword research session (50 keywords) costs $1 to $5 in DataForSEO credits, versus $99+ per month for Ahrefs regardless of usage. Self-hosting eliminates the 28% markup the hosted version charges. Unlike Semrush or Ahrefs, you never pay for seats, and turning off the tool for three months costs you nothing.
Self-hosting with Docker or Cloudflare WorkersDeploy on your own infrastructure with a single Docker command (requires Node.js and a DataForSEO API key), or use the Cloudflare Workers path for internet-facing setups that work on Cloudflare's free tier. Self-hosting means you control uptime, data residency, and the ability to fork and extend the codebase. The MIT license allows commercial use and modification without restriction.
Active development and strong GitHub communityOpenSEO has 11,400 stars on GitHub with commits pushed as recently as August 2026. The maintainer (Ben Senescu) ships features weekly, and the Discord community (linked in the README) has hundreds of active users sharing custom agent skills and deployment guides. Issue response time averages under 48 hours based on recent GitHub activity.
MCP integration for AI-native SEO workflowsThe Model Context Protocol server lets AI agents query your SEO data programmatically, which is a capability Semrush and Ahrefs do not offer. You can ask Claude Code to research keywords for a topic, pull competitor backlinks, or run a site audit, and the agent uses OpenSEO's MCP tools instead of guessing or hallucinating data. Pre-built skills for keyword clustering and SERP analysis are included.

Trade-offs

-Requires a DataForSEO API key and upfront setupOpenSEO does not include its own SEO data crawler. You must sign up for a DataForSEO account (free tier available, paid credits start at $1 per 50 keyword checks) and configure the API key in OpenSEO's settings. This is a one-time setup step, but it means you cannot use OpenSEO out of the box without a third-party service. The hosted version at openseo.so bundles this for you but charges a 28% markup.
-Narrower feature set than enterprise suitesOpenSEO focuses on keyword research, backlinks, rank tracking, site audits, and AI visibility. It does not include Semrush's advertising research, social media listening, content marketing tools, or Ahrefs' Content Explorer (a database of top-performing articles). If you need those adjacent features, OpenSEO will not replace Semrush entirely. For core SEO workflows, it covers what most developers use.
-Self-hosting adds infrastructure responsibilityThe Docker path requires a server with Node.js, and the Cloudflare Workers path requires Cloudflare account setup and Wrangler CLI familiarity. Keeping OpenSEO updated, managing DataForSEO API quotas, and troubleshooting deployment issues fall on you. The hosted version removes this burden but costs $10 per month plus the DataForSEO markup. If you prefer zero infrastructure work, Semrush or Ahrefs are simpler.

versus alternatives

open-seo vs alternatives#

OpenSEO vs Semrush

Semrush charges $119 per month for 500 tracked keywords and bundles advertising research, social media tools, and content marketing features. OpenSEO costs $0 to self-host plus DataForSEO API credits ($0.02 to $0.10 per keyword query). For a solo developer tracking 50 keywords monthly, OpenSEO's total cost is $5 to $10 versus Semrush's $119.

Feature	OpenSEO	Semrush
License	MIT	Proprietary
Monthly cost	$0 + API credits	$119+
Keyword research	Yes	Yes
Backlinks	Yes	Yes
Rank tracking	Pay per query	500 keywords
Advertising research	No	Yes
MCP for AI agents	Yes	No

OpenSEO is better when you need core SEO data without the marketing suite. Semrush wins if you need advertising insights or prefer zero-setup SaaS.

OpenSEO vs Ahrefs

Ahrefs charges $99 per month for 500 tracked keywords and includes Content Explorer (15 billion pages ranked by traffic). OpenSEO does not include a content database but covers keyword research, backlinks, rank tracking, and site audits at pay-as-you-go pricing.

Feature	OpenSEO	Ahrefs
License	MIT	Proprietary
Monthly cost	$0 + API credits	$99+
Keyword research	Yes	Yes
Backlinks	Yes	Yes (largest index)
Content Explorer	No	Yes
AI visibility	Yes	No
MCP for AI agents	Yes	No

OpenSEO saves $80+ per month if you only need keyword and backlink data. Ahrefs' Content Explorer is valuable for content research that OpenSEO does not replicate.

install · quick start

Quick start#

bash

OpenSEO supports two self-hosting paths: Docker for personal use and Cloudflare Workers for internet-facing deployments. Both require a DataForSEO API key (sign up at dataforseo.com, free tier available).

**Docker (recommended for getting started):**

```bash
docker run -p 3002:3002 \
  -e DATAFORSEO_LOGIN=your_login \
  -e DATAFORSEO_PASSWORD=your_password \
  every-app/open-seo
```

Access the UI at http://localhost:3002. Full setup guide: docs/SELF_HOSTING_DOCKER.md in the GitHub repo.

**Cloudflare Workers (for internet-facing hosting):**

Works on Cloudflare's free tier. Follow the deployment guide at docs/SELF_HOSTING_CLOUDFLARE.md. Requires Wrangler CLI and a Cloudflare account.

**Local development:**

See docs/LOCAL_DEVELOPMENT.md for contributor setup.

tech stack · detected from GitHub

What it's built on#

Languages: JavaScriptTypeScript
Frameworks: React

frequently asked

FAQ#

Is OpenSEO completely free?

The self-hosted version is MIT licensed and free to run on your infrastructure. You pay DataForSEO directly for API credits (keyword checks, backlink data, site crawls). Typical costs are $0.02 to $0.10 per keyword query and $1 to $5 per backlink report, depending on domain size. For a solo developer, monthly DataForSEO costs might be $5 to $20. The hosted version at openseo.so charges $10 per month plus a 28% markup on DataForSEO requests, which simplifies billing but costs more over time.

How does OpenSEO compare to Semrush and Ahrefs?

OpenSEO covers the core workflows (keyword research, backlinks, rank tracking, site audits) that Semrush and Ahrefs are known for, but with a pay-as-you-go model instead of fixed subscriptions. Semrush ($119/month) and Ahrefs ($99/month) bundle advertising research, content tools, and social listening that OpenSEO does not include. If you only need keyword data and backlink analysis, OpenSEO saves $80 to $100 per month. If you need the full marketing suite, OpenSEO is a supplement, not a replacement.

Can I self-host OpenSEO on a cheap VPS?

Yes. The Docker path runs on any VPS with Node.js installed (a $5/month VPS from DigitalOcean or Hetzner works). You need a DataForSEO API key configured in the environment variables. The Cloudflare Workers path is more complex but works on Cloudflare's free tier if you follow the self-hosting guide at openseo.so/docs. Both paths are documented in the GitHub repository under docs/SELF_HOSTING_DOCKER.md and docs/SELF_HOSTING_CLOUDFLARE.md.

Does OpenSEO work with AI agents like Claude Code?

Yes. OpenSEO exposes a Model Context Protocol (MCP) server that AI agents can query for keyword data, backlinks, and SERP rankings. Claude Code, OpenClaw, and Hermes have pre-built OpenSEO skills that guide the agent through common tasks (keyword clustering, competitor analysis, site audits). Setup instructions are at openseo.so/docs/mcp. This feature is unique to OpenSEO and not available in Semrush or Ahrefs.

What are the limitations of OpenSEO compared to enterprise tools?

OpenSEO focuses on keyword research, backlinks, rank tracking, site audits, and AI visibility. It does not include Semrush's advertising research (PPC competitor data, Google Ads insights), social media listening, or content marketing tools (topic research, SEO writing assistant). Ahrefs' Content Explorer (a database of 15 billion pages ranked by traffic and backlinks) is also absent. If you need those features, you still need Semrush or Ahrefs. For core SEO data, OpenSEO is sufficient.

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