HashiCorp
HashiCorp wires Terraform and Vault to make infrastructure safely agent-operable.
Comparison · DevOps
Stirling-PDF vs Rivet
A side-by-side editorial comparison of Stirling-PDF and Rivet — release velocity, themes, recent moves, and the top alternatives to consider.
Stirling-PDF vs Rivet: at a glance
| Feature | Stirling-PDF | Rivet |
|---|---|---|
| Sector | DevOps | DevOps |
| Velocity score | 5.0 | 6.3 |
| Sparks · 30d | 0 | 1 |
| Top themes | pdf, self-hosted, desktop, performance | edge-compute, actors, ai-agent-infra, rust-rewrite |
| Last editorial update | 7d ago | 1d ago |
| Website | Visit → | — |
What is Stirling-PDF?
Stirling-PDF matures V2 with big memory cuts and broader desktop packaging
Stirling-PDF is in a sustained V2 maturation phase, shipping near-monthly releases that broaden desktop distribution and sharpen file handling. The 2.12 release lands JDK 25 enforcement and large memory cuts for merge and split, up to 99% via JPDFium, following a new file-management UI in 2.11 and added Linux and Mac package formats.
What is Rivet?
Rivet hardened its actor runtime into a stateful platform and is chasing AI-agent infra.
Rivet is an actor-based edge-compute platform that shipped its core primitives in a fast burst: durable Workflows, per-actor Queues, and per-actor SQLite all landed in late February, followed by agentOS—a WASM/V8-isolate VM for AI agents—in April and a dashboard redesign in May. The June 2.3 release rewrites the RivetKit SDK core in native Rust and adds fine-grained control over actor lifecycle.
Stirling-PDF vs Rivet: editorial side-by-side
Stirling-PDF
5.0DEVOPS
Stirling-PDF matures V2 with big memory cuts and broader desktop packaging
◆ Current state
Stirling-PDF is in a sustained V2 maturation phase, shipping near-monthly releases that broaden desktop distribution and sharpen file handling. The 2.12 release lands JDK 25 enforcement and large memory cuts for merge and split, up to 99% via JPDFium, following a new file-management UI in 2.11 and added Linux and Mac package formats.
◆ Where it's heading
The project is hardening the self-hosted and desktop experience across packaging, memory efficiency, and UX, while laying groundwork the team describes as oriented toward automation. Performance and distribution breadth, not new tools, are the current center of gravity.
◆ Prediction
Expect the automation groundwork in 2.12 to surface as concrete features in coming releases, with continued memory and speed work across the tool set.
Rivet
6.3DEVOPS
Rivet hardened its actor runtime into a stateful platform and is chasing AI-agent infra.
◆ Current state
Rivet is an actor-based edge-compute platform that shipped its core primitives in a fast burst: durable Workflows, per-actor Queues, and per-actor SQLite all landed in late February, followed by agentOS—a WASM/V8-isolate VM for AI agents—in April and a dashboard redesign in May. The June 2.3 release rewrites the RivetKit SDK core in native Rust and adds fine-grained control over actor lifecycle.
◆ Where it's heading
Two arcs are running together. The actor runtime is being hardened into a complete stateful platform—storage (SQLite), messaging (queues), orchestration (workflows)—now sitting on a native-Rust core for performance and control. In parallel, Rivet is pushing into AI-agent infrastructure with agentOS and (from the broader log) a universal Sandbox Agent SDK, positioning itself as the execution layer beneath agents and undercutting sandbox providers on cold-start and cost.
◆ Prediction
Expect the Rust 2.3 core to anchor further performance and lifecycle features, and agentOS to gain managed or hosted options as Rivet leans harder into the agent-sandbox market.
Alternatives to Stirling-PDF and Rivet
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 Stirling-PDF or Rivet.
GitHub
GitHub prunes its standalone AI bets while pushing natively into code quality.
Speakeasy
Speakeasy's Gram is becoming the governance layer for enterprise AI assistants
Tigris
Tigris reshapes S3-compatible storage as the substrate for AI agents
Argo CD
Argo CD closes out the 3.4 line and opens 3.5 development, holding a steady, supply-chain-hardened release cadence.
Jenkins
Jenkins keeps its weekly cadence, hardening the experimental UI and agent reliability.
See all Stirling-PDF alternatives → · See all Rivet alternatives →
Recent activity from Stirling-PDF and Rivet
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoRivetIntroducing the Effect SDK for Rivet Actors
- 2d agoRivetRivet 2.3: native Rust RivetKit rewrite and new dashboard ⚡
- 7d agoStirling-PDF2.12.0 JDK25, Folder storage, Huge memory improvements for merge and lots more
- 13d agoStirling-PDF2.12 pre relase test - dont use
- 28d agoRivetDashboard Redesign
- 29d agoStirling-PDF2.11.0 New easy file management UI release
- 1mo agoStirling-PDF2.10.1 Unified mac installer, bug fixes and improvements
- 1mo agoStirling-PDF2.10.0 AppImage, RPM, bug fixes and more
- 2mo agoStirling-PDF2.9.2 hotfix for folder scanning
- 2mo agoRivetIntroducing agentOS ⚡
- 3mo agoRivetIntroducing SQLite for Rivet Actors
- 3mo agoRivetIntroducing Queues for Rivet Actors
Frequently asked questions
What is the difference between Stirling-PDF and Rivet?
They serve adjacent needs but don't currently overlap on shipped themes. Rivet is currently shipping more aggressively (velocity 6.3 vs 5.0), 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 Stirling-PDF better than Rivet?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Rivet is currently shipping more aggressively (velocity 6.3 vs 5.0), 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 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.
What are the best alternatives to Rivet?
Top Rivet alternatives in DevOps are ranked by recent ship velocity. Browse the "Rivet alternatives" section above for the current picks, or visit /alternatives/rivet for the full list with editorial commentary on each.