Verdaccio
Verdaccio pushes its v9 pre-release to next-9.44, still with no release notes
Comparison · Infra & APIs
Firecracker vs GravityKit
A side-by-side editorial comparison of Firecracker and GravityKit — release velocity, themes, recent moves, and the top alternatives to consider.
Firecracker vs GravityKit: at a glance
What is Firecracker?
Firecracker can now run microVMs on Nitro instead of KVM, with the same API.
Firecracker is the open-source microVM monitor behind AWS Lambda and Fargate. 2026 brought PCI virtio hotplug in developer preview (1.16), virtio device reset and richer metrics (1.17), and now 1.18.0 adds Nitro Sandboxes: Firecracker can drive the Nitro Enclaves driver instead of /dev/kvm to launch VMs the Nitro Hypervisor carves out of the parent EC2 instance. The existing API, jailer and virtio device model stay the same, and a new PUT /enclave endpoint selects confidential or direct mode.
What is GravityKit?
GravityKit's latest Launch Log is security fixes plus Parent Entry ID fields.
GravityKit ships a weekly Launch Log across its Gravity Forms add-ons. The November 6 log is mostly security fixes in Entry Tags, GravityEdit, GravityExport Lite and GravityView, plus Parent Entry ID fields and User Registration fixes in Edit Entry. October's bigger items were Visual Merge Tags, AI-built boards, AI-managed calendars and live DataTables totals.
Firecracker vs GravityKit: editorial side-by-side
Firecracker
3.8INFRA · APIS
Firecracker can now run microVMs on Nitro instead of KVM, with the same API.
◆ Current state
Firecracker is the open-source microVM monitor behind AWS Lambda and Fargate. 2026 brought PCI virtio hotplug in developer preview (1.16), virtio device reset and richer metrics (1.17), and now 1.18.0 adds Nitro Sandboxes: Firecracker can drive the Nitro Enclaves driver instead of /dev/kvm to launch VMs the Nitro Hypervisor carves out of the parent EC2 instance. The existing API, jailer and virtio device model stay the same, and a new PUT /enclave endpoint selects confidential or direct mode.
◆ Where it's heading
The project is widening what a Firecracker microVM can be without changing how operators drive it: hotplug and reset made the VM lifecycle more flexible, and Nitro support makes the hypervisor backend swappable. Patch releases keep landing on several stable lines at once, so the maintainers are supporting older minors while the feature surface grows.
◆ Prediction
Expect 1.18.x patches that fix Nitro Sandbox edge cases and documentation on which devices and snapshot features work in confidential mode; the release does not say whether Nitro support will leave preview or reach feature parity with KVM.
GravityKit
5.0INFRA · APIS
GravityKit's latest Launch Log is security fixes plus Parent Entry ID fields.
◆ Current state
GravityKit ships a weekly Launch Log across its Gravity Forms add-ons. The November 6 log is mostly security fixes in Entry Tags, GravityEdit, GravityExport Lite and GravityView, plus Parent Entry ID fields and User Registration fixes in Edit Entry. October's bigger items were Visual Merge Tags, AI-built boards, AI-managed calendars and live DataTables totals.
◆ Where it's heading
The suite alternates feature weeks, often AI-assistant hooks into boards, calendars and migrations, with maintenance weeks heavy on security patches. Linking entries across forms keeps growing alongside Multiple Forms 1.0 from September.
◆ Prediction
Expect next week's log to return to a feature headline, likely more AI-assistant control in another add-on, alongside further security fixes.
Alternatives to Firecracker and GravityKit
Other Infra & APIs 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 Firecracker or GravityKit.
Gloo Gateway
Gloo Gateway 1.20.30 reverses parts of 1.20.29 that dropped rate limits and ext-auth updates
Apache Druid
Druid tags 39.0.0 rc1 five weeks after 38, a faster turn than recent majors.
Algolia
Algolia's AI Assist now writes merchandising rules from a plain-language request
Nautobot
Nautobot 3.3 alpha adds API rate limits while 3.2.9 stops cross-user token reads.
SpinupWP
SpinupWP now writes DNS records for you, starting with Cloudflare and Route 53.
See all Firecracker alternatives → · See all GravityKit alternatives →
Recent activity from Firecracker and GravityKit
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 14h agoFirecrackerFirecracker 1.18 runs microVMs on Nitro, not just KVM ⚡
- 4d agoGravityKitGravityKit adds Parent Entry ID fields and patches four add-ons
- 11d agoGravityKitLaunch Log: Live DataTables totals, a Remove Data option, and rounding for Number field merge tags
- 18d agoGravityKitGravityKit adds slider search and AI calendar management
- 25d agoGravityKitGravityKit adds AI-built boards and inline Entry Tags editing
- 1mo agoGravityKitLaunch Log: Search Everything matches what fields show, steadier map searches, and security updates
- 1mo agoGravityKitAnnouncing Visual Merge Tags: tags you can read, edit, and preview in Gravity Forms
- 2mo agoFirecrackerFirecracker 1.17: virtio device reset and richer metrics
- 2mo agoFirecrackerFirecracker v1.16.2
- 4mo agoFirecrackerFirecracker v1.16.1
- 5mo agoFirecrackerFirecracker v1.16.0 ⚡
- 7mo agoFirecrackerFirecracker v1.14.4
Frequently asked questions
What is the difference between Firecracker and GravityKit?
They serve adjacent needs but don't currently overlap on shipped themes. GravityKit is currently shipping more aggressively (velocity 5.0 vs 3.8), with 0 editorial sparks in the last 30 days against 1. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Firecracker better than GravityKit?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. GravityKit is currently shipping more aggressively (velocity 5.0 vs 3.8), with 0 editorial sparks in the last 30 days against 1. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Firecracker?
Top Firecracker alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Firecracker alternatives" section above for the current picks, or visit /alternatives/firecracker for the full list with editorial commentary on each.
What are the best alternatives to GravityKit?
Top GravityKit alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "GravityKit alternatives" section above for the current picks, or visit /alternatives/gravitykit for the full list with editorial commentary on each.