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Comparison · DevOps
Coolify vs Stirling-PDF
A side-by-side editorial comparison of Coolify and Stirling-PDF — release velocity, themes, recent moves, and the top alternatives to consider.
Coolify vs Stirling-PDF: at a glance
| Feature | Coolify | Stirling-PDF |
|---|---|---|
| Sector | DevOps | DevOps |
| Velocity score | 2.5 | 6.3 |
| Sparks · 30d | 0 | 1 |
| Top themes | self-hosted-paas, security-hardening, docker-deployment, open-source | mcp, ai-document-tools, self-hosted, performance |
| Last editorial update | 1mo ago | 2d ago |
| Website | — | Visit → |
What is Coolify?
Coolify is in a sustained security-hardening run while the v4 beta inches forward.
Coolify is releasing roughly weekly beta builds dominated by security and reliability work: mass-assignment protection, query scoping, input validation, encrypted webhook secrets, accidental-prune protection. Each release also slips in small bug fixes and the occasional new service template. The same release is published across two feeds, so duplicates are common in the changelog.
What is Stirling-PDF?
Stirling-PDF layers MCP and metered AI tools onto its OSS PDF utility, plus a SaaS tier.
Stirling-PDF is shipping fast on its V2 line. The last month splits between heavy engineering — JDK 25 enforcement, a new JPDFium path cutting merge/split memory use by up to 99%, server-side folder storage, desktop multi-window — and a newer direction: an MCP integration page plus pay-as-you-go AI document tools, with stirling.com's SaaS code now folded into the OSS repo. A reworked file-management UI (files left, tools right) addresses long-standing complaints about V2's 'forced file management.' Releases are frequent and several are explicitly flagged WIP.
Coolify vs Stirling-PDF: editorial side-by-side
Coolify
2.5DEVOPS
Coolify is in a sustained security-hardening run while the v4 beta inches forward.
◆ Current state
Coolify is releasing roughly weekly beta builds dominated by security and reliability work: mass-assignment protection, query scoping, input validation, encrypted webhook secrets, accidental-prune protection. Each release also slips in small bug fixes and the occasional new service template. The same release is published across two feeds, so duplicates are common in the changelog.
◆ Where it's heading
The product is hardening for production self-hosted use rather than expanding feature surface. Several recent fixes — team-scoped queries, locked properties, encryption for secrets — are the kind of multi-tenant defenses that matter when self-hosted PaaS instances start hosting more than one team's workloads. The v4 beta is converging toward stable, but security debt is still being paid down before that happens.
◆ Prediction
Expect a v4 GA cut once the security backlog drains and the new-template flow stabilizes, plus an explicit audit/security advisory listing the hardening work. New service templates will continue to drip in opportunistically.
Stirling-PDF
6.3DEVOPS
Stirling-PDF layers MCP and metered AI tools onto its OSS PDF utility, plus a SaaS tier.
◆ Current state
Stirling-PDF is shipping fast on its V2 line. The last month splits between heavy engineering — JDK 25 enforcement, a new JPDFium path cutting merge/split memory use by up to 99%, server-side folder storage, desktop multi-window — and a newer direction: an MCP integration page plus pay-as-you-go AI document tools, with stirling.com's SaaS code now folded into the OSS repo. A reworked file-management UI (files left, tools right) addresses long-standing complaints about V2's 'forced file management.' Releases are frequent and several are explicitly flagged WIP.
◆ Where it's heading
Two arcs are visible in the entries. One is performance and desktop maturity: memory, JDK, multi-window, an auto-updater. The other, newer one is monetizable AI — an MCP page and PAYG-gated AI document and 'AI Create' tools, alongside a SaaS/OSS split the team says it will clarify in coming releases. Stirling-PDF is positioning to be both a self-hosted utility and a hosted, AI-assisted service.
◆ Prediction
Expect the MCP page and AI document tools to move from WIP toward shipped, billed features, and clearer OSS-vs-SaaS release notes as the team separates the two products.
Alternatives to Coolify and Stirling-PDF
Other DevOps products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Coolify or Stirling-PDF.
Astro
Astro 7.0 lands a Rust compiler and advanced routing as the framework chases build speed
Deno
Deno expands from runtime to platform — desktop apps, agent firewalls, and managed deploy
Bun
Bun keeps absorbing the toolchain — image processing, HTTP/3, and a built-in test runner
Hono
Hono is in a sustained security-hardening cycle, patching middleware and serverless adapters
Svelte
Svelte's remote functions grow into a real-time data layer as the API stabilizes
See all Coolify alternatives → · See all Stirling-PDF alternatives →
Recent activity from Coolify and Stirling-PDF
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoStirling-PDF2.13.2 Desktop performance fix, and security fixes
- 8d agoStirling-PDF2.13.1 bug fixes for desktop upload from mobile and multitool rotations
- 8d agoStirling-PDF2.13.0 MCP, files UI tweaks and bug fixes ⚡
- 18d agoStirling-PDF2.12.0 JDK25, Folder storage, Huge memory improvements for merge and lots more
- 24d agoStirling-PDF2.12 pre relase test - dont use
- 1mo agoStirling-PDF2.11.0 New easy file management UI release
- 2mo agoCoolifyBeta 474: data-loss guard for pruned containers, encrypted webhook secrets
- 2mo agoCoolifyBeta 474 (duplicate publish)
- 2mo agoCoolifyBeta 473: upgrade modal + Git source cleanup fixes
- 2mo agoCoolifyBeta 473 (duplicate publish)
- 2mo agoCoolifyBeta 472: Alpine/Alexandrie patches, quoted Docker args, new templates
- 2mo agoCoolifyBeta 471: multi-issue security hardening sweep
Frequently asked questions
What is the difference between Coolify and Stirling-PDF?
They serve adjacent needs but don't currently overlap on shipped themes. Stirling-PDF is currently shipping more aggressively (velocity 6.3 vs 2.5), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Coolify better than Stirling-PDF?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Stirling-PDF is currently shipping more aggressively (velocity 6.3 vs 2.5), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other DevOps products to evaluate alongside.
What are the best alternatives to Coolify?
Top Coolify alternatives in DevOps are ranked by recent ship velocity. Browse the "Coolify alternatives" section above for the current picks, or visit /alternatives/coolify for the full list with editorial commentary on each.
What are the best alternatives to Stirling-PDF?
Top Stirling-PDF alternatives in DevOps are ranked by recent ship velocity. Browse the "Stirling-PDF alternatives" section above for the current picks, or visit /alternatives/stirling-pdf for the full list with editorial commentary on each.