Workato
Workato just made itself the control plane for every MCP server in the building.
Comparison · DevOps
Tigris vs Undertow
A side-by-side editorial comparison of Tigris and Undertow — release velocity, themes, recent moves, and the top alternatives to consider.
Tigris vs Undertow: at a glance
| Feature | Tigris | Undertow |
|---|---|---|
| Sector | DevOps | DevOps |
| Velocity score | 5.0 | 0.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | object-storage, immutability, agent-native, s3-compatibility | http-server, java, http2, cve-fixes |
| Last editorial update | 1h ago | 8h ago |
| Website | — | Visit → |
What is Tigris?
Tigris still ships features inside essays, and the newest one is a recycle bin.
The feed is a blog, not a changelog, and each post is an engineering argument that happens to carry a product change. This window has three: a recycle bin for objects and buckets built on immutable storage so deletion in a geo-replicated active-active system stops meaning data loss, agent-native onboarding via tigris init --agent, and a CLI that migrates an entire bucket from any S3-compatible provider in one command. The rest are essays on SigV4, presigned URLs, and ClickHouse restore economics.
What is Undertow?
Undertow 2.4.0 clears three CVEs and finally lands long-open HTTP/2 and timeout requests
Undertow's 2.4 line opened in May 2026 with a release that combines three CVE fixes with a backlog of feature requests, several of them years old judging by their issue numbers — in-flight request processing time tracking, comments in the predicate language, a configurable async context timeout replacing a hard-coded one, HTTP/2 GOAWAY connection management, a TLS protocol version exchange attribute, and a method to invalidate all cache paths. The two releases since have been small: a handful of Jiras in 2.4.1, and a 2.4.2 whose entire release note is the sentence that it was tagged.
Tigris vs Undertow: editorial side-by-side
Tigris
5.0DEVOPS
Tigris still ships features inside essays, and the newest one is a recycle bin.
◆ Current state
The feed is a blog, not a changelog, and each post is an engineering argument that happens to carry a product change. This window has three: a recycle bin for objects and buckets built on immutable storage so deletion in a geo-replicated active-active system stops meaning data loss, agent-native onboarding via tigris init --agent, and a CLI that migrates an entire bucket from any S3-compatible provider in one command. The rest are essays on SigV4, presigned URLs, and ClickHouse restore economics.
◆ Where it's heading
Two arguments run underneath everything: object storage should be the durable state layer for agents, and S3 compatibility is a surface to be explained rather than merely claimed. The SigV4 and presigned-URL posts are the second argument in practice — publishing where the protocol is dangerous is a credibility play against the incumbent. The recycle bin extends the immutability story into a place immutable systems usually struggle, which is undoing a mistake.
◆ Prediction
Expect more posts that pair a protocol critique with the Tigris behavior that answers it; the egress-cost framing from the ClickHouse post is the one most likely to recur as a paid migration path.
Undertow
0.0DEVOPS
Undertow 2.4.0 clears three CVEs and finally lands long-open HTTP/2 and timeout requests
◆ Current state
Undertow's 2.4 line opened in May 2026 with a release that combines three CVE fixes with a backlog of feature requests, several of them years old judging by their issue numbers — in-flight request processing time tracking, comments in the predicate language, a configurable async context timeout replacing a hard-coded one, HTTP/2 GOAWAY connection management, a TLS protocol version exchange attribute, and a method to invalidate all cache paths. The two releases since have been small: a handful of Jiras in 2.4.1, and a 2.4.2 whose entire release note is the sentence that it was tagged.
◆ Where it's heading
The 2.4.0 pattern — a long-deferred feature backlog shipping in the same release as security fixes — suggests features move when a release has to happen anyway rather than on their own schedule. What did ship points at operational control: timeouts that were hard-coded becoming configurable, connection lifecycle handling for HTTP/2, and attributes exposing TLS and timing detail to whatever sits above the server. Enabling test runs on JDK 25 in 2.4.1 is the only forward-looking item in the two follow-up releases.
◆ Prediction
With three entries and one substantive release among them, there is little to extrapolate from; the JDK 25 test enablement is the one thread that implies more work, pointing at runtime compatibility rather than features as the near-term focus.
Alternatives to Tigris and Undertow
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 Tigris or Undertow.
ASP.NET Core
Four branches on a servicing drumbeat, with 10.0 taking the only real fixes.
Laravel
Laravel runs two trains in lockstep, and 13.x is still where features land.
Frappe Framework
Two trains ship the same features minutes apart while v16 absorbs the CRM stack.
Weaviate
Weaviate is turning the vector database into an agent runtime with tunable search effort
Betaflight
Betaflight grew a real autopilot: waypoint missions, geofence RTH and MAVLink ground control
See all Tigris alternatives → · See all Undertow alternatives →
Recent activity from Tigris and Undertow
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 22h agoTigrisExtending immutability: deletion without losing data
- 5d agoTigrisSigV4 authentication is surprisingly complicated
- 14d agoTigrisHumans don't install software themselves anymore, their agents do
- 26d agoTigrisThe Most Expensive ClickHouse Query Is the Restore
- 28d agoTigrisPresigned URLs are technically a security vuln
- 1mo agoTigrisMigrate your data with the Tigris CLI
- 1mo agoUndertow2.4.2.Final
- 2mo agoUndertowUndertow 2.4.1 makes the HTTP/1.1 reason-phrase optional
- 2mo agoUndertowUndertow 2.4.0 fixes three CVEs and adds HTTP/2 GOAWAY handling
Frequently asked questions
What is the difference between Tigris and Undertow?
They serve adjacent needs but don't currently overlap on shipped themes. Tigris is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Tigris better than Undertow?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Tigris is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Tigris?
Top Tigris alternatives in DevOps are ranked by recent ship velocity. Browse the "Tigris alternatives" section above for the current picks, or visit /alternatives/tigris for the full list with editorial commentary on each.
What are the best alternatives to Undertow?
Top Undertow alternatives in DevOps are ranked by recent ship velocity. Browse the "Undertow alternatives" section above for the current picks, or visit /alternatives/undertow for the full list with editorial commentary on each.