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Comparison · DevOps
Libreswan vs Scalingo
A side-by-side editorial comparison of Libreswan and Scalingo — release velocity, themes, recent moves, and the top alternatives to consider.
Libreswan vs Scalingo: at a glance
What is Libreswan?
Libreswan patches four CVEs on two lines, two of them credited to Claude and Ada Logics.
Libreswan is an IPsec VPN implementation for Linux and the BSDs. On October 5 it released 5.4.1 and 5.3.3 together: 5.4.1 fixes three CVEs (null-pointer crashes on unexpected EAP and empty PKCS7 payloads, and a use-after-free on EOF in IKE over TCP), and 5.3.3 fixes the same three plus a FIPS certificate-leak denial of service. v5.4 in August remains the latest feature release, adding ML-KEM 768 post-quantum key exchange via RFC 9370.
What is Scalingo?
Scalingo opens its Application Firewall to every app and adds CLI commands for it.
Scalingo is a European PaaS that keeps runtimes close to upstream. On November 9 its Application Firewall became available for all applications, letting any app restrict public HTTP and HTTPS access to allowed IPv4 ranges, and CLI 1.52.0 added commands to list, add and remove those rules plus an organizations command. Earlier in the month it patched every stack image for a Brotli decoder CVE and rebuilt nginx against zlib 1.4.
Libreswan vs Scalingo: editorial side-by-side
Libreswan
5.0DEVOPS
Libreswan patches four CVEs on two lines, two of them credited to Claude and Ada Logics.
◆ Current state
Libreswan is an IPsec VPN implementation for Linux and the BSDs. On October 5 it released 5.4.1 and 5.3.3 together: 5.4.1 fixes three CVEs (null-pointer crashes on unexpected EAP and empty PKCS7 payloads, and a use-after-free on EOF in IKE over TCP), and 5.3.3 fixes the same three plus a FIPS certificate-leak denial of service. v5.4 in August remains the latest feature release, adding ML-KEM 768 post-quantum key exchange via RFC 9370.
◆ Where it's heading
Security response dominates the release history: 5.3.1, 5.3.2, 5.3.3 and 5.4.1 are all CVE releases, with 5.4 the one feature release among them. Recent CVEs credit AI-assisted audits, so the find rate may stay high while that tooling runs over the codebase.
◆ Prediction
Expect further point releases on both the 5.3 and 5.4 lines while 5.3 is still maintained. The entries do not show when a 5.5 feature release is due.
Scalingo
5.0DEVOPS
Scalingo opens its Application Firewall to every app and adds CLI commands for it.
◆ Current state
Scalingo is a European PaaS that keeps runtimes close to upstream. On November 9 its Application Firewall became available for all applications, letting any app restrict public HTTP and HTTPS access to allowed IPv4 ranges, and CLI 1.52.0 added commands to list, add and remove those rules plus an organizations command. Earlier in the month it patched every stack image for a Brotli decoder CVE and rebuilt nginx against zlib 1.4.
◆ Where it's heading
After October's router incident, the platform is adding security controls at the edge alongside its routine runtime updates. Firewall rules in the CLI suggest they are meant to be scripted, not just set in the dashboard.
◆ Prediction
Expect the firewall to gain more options, IPv6 ranges being the obvious gap, alongside the usual buildpack updates.
Alternatives to Libreswan and Scalingo
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 Libreswan or Scalingo.
Gravity Wiz
Gravity Wiz previews Flowcrafter, a visual workflow canvas for Gravity Forms.
GitLab
GitLab sells Orbit as the evidence layer for agent pilots and AI-code rules.
NATS
NATS second release candidates add a config reload check and faster redelivery queues.
Zed
Zed 1.27 writes commit messages in your repo's style and trims agent memory use.
Z-Wave JS UI
Z-Wave JS UI 11.26 picks up zwave-js 15.32 and finishes the move to Node 24.
See all Libreswan alternatives → · See all Scalingo alternatives →
Recent activity from Libreswan and Scalingo
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoScalingoScalingo CLI 1.52 manages firewall rules and lists organizations
- 1d agoScalingoScalingo Application Firewall opens to all applications
- 3d agoScalingoScalingo nginx builds recompiled with zlib 1.4
- 6d agoScalingoScalingo InfluxDB 1.8.10-3 drops eMudhra certificate
- 7d agoScalingoBase images patched for Brotli decoder CVE on all stacks
- 7d agoScalingobuildpacks - nginx: nginx 1.31.8 (mainline) is now available
- 1mo agoLibreswan5.4.1 Security Release addresses three CVEs
- 1mo agoLibreswan5.3.3 Security Release addresses four CVEs
- 2mo agoLibreswan5.4: ML-KEM 768 and RFC 9370 multiple key exchanges for IKEv2 ⚡
- 3mo agoLibreswan5.3.2: FIPS-mode daemon crash from malformed X.509 certificates
- 4mo agoLibreswan5.3.1: three CVEs and a newer-GCC compile fix
- 2y agoLibreswanIKEv1 cryptosuite defaults tightened; systemd libxz dependency dropped
Frequently asked questions
What is the difference between Libreswan and Scalingo?
They serve adjacent needs but don't currently overlap on shipped themes. Libreswan and Scalingo are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Libreswan better than Scalingo?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Libreswan and Scalingo are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other DevOps products to evaluate alongside.
What are the best alternatives to Libreswan?
Top Libreswan alternatives in DevOps are ranked by recent ship velocity. Browse the "Libreswan alternatives" section above for the current picks, or visit /alternatives/libreswan for the full list with editorial commentary on each.
What are the best alternatives to Scalingo?
Top Scalingo alternatives in DevOps are ranked by recent ship velocity. Browse the "Scalingo alternatives" section above for the current picks, or visit /alternatives/scalingo for the full list with editorial commentary on each.