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Comparison · DevOps
OpenWrt vs Stirling-PDF
A side-by-side editorial comparison of OpenWrt and Stirling-PDF — release velocity, themes, recent moves, and the top alternatives to consider.
OpenWrt vs Stirling-PDF: at a glance
What is OpenWrt?
OpenWrt's releases are still set by security fixes, now mostly on the 25.12 branch.
OpenWrt 25.12 is the active stable series, and its sixth service release on October 19 fixed several remotely triggerable flaws in network services that are enabled by default. Nearly every release since March has been vulnerability response, from the Trail of Bits audit CVEs to odhcpd's DHCPv6 overflow and the dnsmasq backports. The 24.10 branch's last entry is 24.10.8 in July.
What is Stirling-PDF?
Stirling PDF's 3.x line ships bulk processing, org-wide signing and fortnightly feature releases
Stirling PDF 3.0 in late September added the PDF Processor for running tools across folders, FTP or S3 sources, optional AI classification and extraction, free OAuth SSO and a free allowance of 1,000 automated PDFs a month. Releases since have arrived about every two weeks: 3.1.0 made group signing (Stirling Sign) default for new users and trialled an embedded Office converter, 3.2.0 replaced the multi-tool with a Page Editor and let password-protected PDFs be used without removing the password, and 3.2.1 and 3.2.2 added viewer and annotation features.
OpenWrt vs Stirling-PDF: editorial side-by-side
OpenWrt
2.5DEVOPS
OpenWrt's releases are still set by security fixes, now mostly on the 25.12 branch.
◆ Current state
OpenWrt 25.12 is the active stable series, and its sixth service release on October 19 fixed several remotely triggerable flaws in network services that are enabled by default. Nearly every release since March has been vulnerability response, from the Trail of Bits audit CVEs to odhcpd's DHCPv6 overflow and the dnsmasq backports. The 24.10 branch's last entry is 24.10.8 in July.
◆ Where it's heading
Releases are driven by disclosures in default services such as odhcpd and dnsmasq, with device support added on the side. 24.10 appears to be winding down, which leaves 25.12 as the only line getting fixes.
◆ Prediction
Expect a 25.12.7 when the next default-service CVE batch lands; whether 24.10 gets any further release is unclear from the feed.
Stirling-PDF
5.0DEVOPS
Stirling PDF's 3.x line ships bulk processing, org-wide signing and fortnightly feature releases
◆ Current state
Stirling PDF 3.0 in late September added the PDF Processor for running tools across folders, FTP or S3 sources, optional AI classification and extraction, free OAuth SSO and a free allowance of 1,000 automated PDFs a month. Releases since have arrived about every two weeks: 3.1.0 made group signing (Stirling Sign) default for new users and trialled an embedded Office converter, 3.2.0 replaced the multi-tool with a Page Editor and let password-protected PDFs be used without removing the password, and 3.2.1 and 3.2.2 added viewer and annotation features.
◆ Where it's heading
The product is moving from a self-hosted toolbox to an automation and workflow platform with metered hosted services attached. Feature releases come quickly, with visible regressions fixed in the next point release.
◆ Prediction
Expect Stirling Office Convert to move toward default and native desktop, as the 3.1.0 notes say is planned, plus continued Processor work.
Alternatives to OpenWrt 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 OpenWrt or Stirling-PDF.
Postgres Operator
Postgres Operator v2.0.3 makes md5 pooler auth opt-in in a bug-fix release.
Scalingo
Scalingo is back to routine runtime updates after its October router incident.
Mapnik
Mapnik 4.3.2 is a performance release from one contributor, with line dash fixes.
Eclipse OpenJ9
OpenJ9 0.63 patches CVEs and hardens JITServer against malformed messages.
QGroundControl
QGroundControl's v5.1.5 patch restores mission commands lost to a translation bug.
See all OpenWrt alternatives → · See all Stirling-PDF alternatives →
Recent activity from OpenWrt and Stirling-PDF
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 9d agoStirling-PDF3.2.2 new annotations and other minor changes and improvements
- 11d agoStirling-PDF3.2.1 Viewer improvements and bug fixes
- 14d agoOpenWrtOpenWrt 25.12.6 fixes remote flaws in default services
- 17d agoStirling-PDF3.2.0 New Multi-tool, better passworded PDFs and lots of improvements
- 27d agoStirling-PDF3.1.0 Stirling Sign, signature improvements, Stirling Office Convert (beta) and text editor upgrades
- 1mo agoStirling-PDF3.0.2 bug fixes and dependency updates
- 1mo agoStirling-PDF3.0.1 hotfix for windows desktop bugs
- 3mo agoOpenWrtRemotely triggerable odhcpd flaws patched on 24.10
- 4mo agoOpenWrtCritical DHCPv6 overflow in odhcpd patched
- 5mo agoOpenWrtdnsmasq fixes and the Dirty Frag IPsec privilege escalation
- 5mo agoOpenWrtSix dnsmasq CVEs backported plus the kernel IPsec fix
- 5mo agoOpenWrtTLS library updates and seven new device targets
Frequently asked questions
What is the difference between OpenWrt and Stirling-PDF?
They serve adjacent needs but don't currently overlap on shipped themes. Stirling-PDF is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 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 OpenWrt 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 5.0 vs 2.5), with 0 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 OpenWrt?
Top OpenWrt alternatives in DevOps are ranked by recent ship velocity. Browse the "OpenWrt alternatives" section above for the current picks, or visit /alternatives/openwrt 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.