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GitHub adds Claude Opus 5.5 and GPT-6 models while shipping sandboxed agent execution
Alternatives · software development tools
FusionAuth alternatives
The best FusionAuth alternatives in software development tools, ranked by Sparkpulse's velocity_score.
Updated Sep 23, 2026
Looking for the best alternatives to FusionAuth? Sparkpulse tracks and ranks 12 alternatives in software development tools by shipping velocity — how frequently each ships meaningful updates, verified from official changelogs. For reference, FusionAuth shipped 0 meaningful updates in the last 30 days and carries a velocity score of 2.5 out of 10 in 2026. The alternatives below are ranked the same way, so you're comparing real release momentum, not marketing claims.
About FusionAuth
FusionAuth adds RFC 8707 resource-scoped tokens while most recent changelogs surface only upgrade boilerplate.
FusionAuth's changelog data is thinly populated — most entries show only the standard upgrade recommendation with no detailed content. The substantive releases are 1.67.0 (RFC 8707 resource indicators for OAuth tokens, enabling per-resource audience scoping in the `aud` claim) and 1.66.0 (webhook endpoint security hardening requiring global API keys, a breaking change). FusionAuth is an open-source, self-hosted identity platform in consistent quarterly release cadence.
Velocity 2.5 · Last update 20d ago
Top 12 alternatives to FusionAuth
Ranked by recent ship velocity. Tap any card for the full editorial breakdown, or pivot to a head-to-head.
DEVOPS
Rivet ships OTel tracing, BYOC deployment, and MCP integration in a single month, building production-grade infrastructure for AI agents.
DEVOPS
Speakeasy becomes the enterprise control plane for MCP server access and AI tool governance.
DEVOPS
Weaviate ships Engram agent memory, HFresh disk indexing, and 4-bit quantization in quick succession
DEVOPS
Sanity's MCP server now authors and deploys workflows — agents go from content writers to automation orchestrators.
DEVOPS
Workato adds per-tool RBAC to MCP servers, tightening agent blast radius for enterprise deployments
DEVOPS
Gravity Forms Stripe 7.0 restructures how entries and webhooks are handled with Sandbox support
DEVOPS
CodeRabbit Triage launches a cross-repository PR queue with AI prioritization, moving from review assistance into PR operations.
DEVOPS
Kubernetes v1.37 broad Beta wave hardens storage security, memory management, and lays groundwork for AI workloads.
DEVOPS
Manticore Search's post-29.9.0 patch cycle is stabilizing multi-vector embeddings and concurrent BERT workloads.
DEVOPS
NATS 2.15 ships a desired-state reconciliation engine that fundamentally changes how JetStream clusters are managed.
DEVOPS
Appsmith is killing its own AI datasource and doubling down on security hardening — a strategic retreat from the AI feature race.
FusionAuth vs alternatives — shipping velocity at a glance
Velocity score (0–10) and meaningful releases shipped in the last 30 days, from official changelogs. Higher = shipping faster.
| Product | Velocity | Sparks · 30d | Focus areas | Latest release |
|---|---|---|---|---|
| FusionAuth (baseline) | 2.5 | 0 | authenticationidentityoauth | — |
| GitHub | 10.0 | 2 | ai-codingmodel-marketplaceagentic-security | Claude Opus 5.5 is now available in GitHub Copilot |
| Rivet | 10.0 | 4 | ai-agent-infrastructureobservabilitybyoc | Introducing OpenTelemetry for Rivet Actors and Workflows |
| Speakeasy | 10.0 | 0 | mcp-governanceenterprise-access-controlshadow-ai | — |
| Weaviate | 8.8 | 3 | vector-searchagent-memoryquantization | Agent Memory with Engram: A Practical Guide |
| Sanity | 8.8 | 1 | mcpcontent-managementagentic-tooling | MCP server v2.35.0: Workflow authoring and asset upload improvements |
| Workato | 8.8 | 1 | agent-platformenterprise-rbacmcp | Tool-Level RBAC for MCP Servers — Now Generally Available |
| Gravity Forms | 7.5 | 1 | wordpress-formsstripe-integrationpayment-forms | Brand new release: Stripe 7.0 |
| CodeRabbit | 7.5 | 1 | ai-code-reviewpr-managementdeveloper-tools | CodeRabbit Triage | GitHub Cloud | Team |
| Kubernetes | 7.5 | 0 | ai-workloadsstorage-securitygang-scheduling | — |
| Manticore Search | 7.5 | 0 | vector-searchembeddingsfull-text-search | — |
| NATS | 7.5 | 1 | messagingjetstreamdistributed-systems | NATS 2.15: Desired-State JetStream and Full Cluster Operations Suite |
| Appsmith | 6.3 | 1 | low-codeapp-builderself-hosted | v2.4: Appsmith AI datasource EOL September 30, 2026 |
The 12 best FusionAuth alternatives, in depth
1. GitHub · velocity 10.0
GitHub adds Claude Opus 5.5 and GPT-6 models while shipping sandboxed agent execution.
Over the last 30 days GitHub shipped 2 meaningful updates vs FusionAuth's 0, most recently “Claude Opus 5.5 is now available in GitHub Copilot”. Its velocity score of 10.0/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, GitHub focuses on ai coding, model marketplace and agentic security.
Over the last 30 days GitHub has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
2. Rivet · velocity 10.0
Rivet ships OTel tracing, BYOC deployment, and MCP integration in a single month, building production-grade infrastructure for AI agents.
Over the last 30 days Rivet shipped 4 meaningful updates vs FusionAuth's 0, most recently “Introducing OpenTelemetry for Rivet Actors and Workflows”. Its velocity score of 10.0/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Rivet focuses on ai agent infrastructure, observability and byoc.
Over the last 30 days Rivet has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
3. Speakeasy · velocity 10.0
Speakeasy becomes the enterprise control plane for MCP server access and AI tool governance.
Its velocity score of 10.0/10 reflects longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Speakeasy focuses on mcp governance, enterprise access control and shadow ai.
Speakeasy and FusionAuth have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Speakeasy trajectory → · Compare FusionAuth vs Speakeasy →
4. Weaviate · velocity 8.8
Weaviate ships Engram agent memory, HFresh disk indexing, and 4-bit quantization in quick succession.
Over the last 30 days Weaviate shipped 3 meaningful updates vs FusionAuth's 0, most recently “Agent Memory with Engram: A Practical Guide”. Its velocity score of 8.8/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Weaviate focuses on vector search, agent memory and quantization.
Over the last 30 days Weaviate has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
Full Weaviate trajectory → · Compare FusionAuth vs Weaviate →
5. Sanity · velocity 8.8
Sanity's MCP server now authors and deploys workflows — agents go from content writers to automation orchestrators.
Over the last 30 days Sanity shipped 1 meaningful update vs FusionAuth's 0, most recently “MCP server v2.35.0: Workflow authoring and asset upload improvements”. Its velocity score of 8.8/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Sanity focuses on mcp, content management and agentic tooling.
Over the last 30 days Sanity has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
6. Workato · velocity 8.8
Workato adds per-tool RBAC to MCP servers, tightening agent blast radius for enterprise deployments.
Over the last 30 days Workato shipped 1 meaningful update vs FusionAuth's 0, most recently “Tool-Level RBAC for MCP Servers — Now Generally Available”. Its velocity score of 8.8/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Workato focuses on agent platform, enterprise rbac and mcp.
Over the last 30 days Workato has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
7. Gravity Forms · velocity 7.5
Gravity Forms Stripe 7.0 restructures how entries and webhooks are handled with Sandbox support.
Over the last 30 days Gravity Forms shipped 1 meaningful update vs FusionAuth's 0, most recently “Brand new release: Stripe 7.0”. Its velocity score of 7.5/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Gravity Forms focuses on wordpress forms, stripe integration and payment forms.
Over the last 30 days Gravity Forms has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
Full Gravity Forms trajectory → · Compare FusionAuth vs Gravity Forms →
8. CodeRabbit · velocity 7.5
CodeRabbit Triage launches a cross-repository PR queue with AI prioritization, moving from review assistance into PR operations.
Over the last 30 days CodeRabbit shipped 1 meaningful update vs FusionAuth's 0, most recently “CodeRabbit Triage | GitHub Cloud | Team”. Its velocity score of 7.5/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, CodeRabbit focuses on ai code review, pr management and developer tools.
Over the last 30 days CodeRabbit has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
Full CodeRabbit trajectory → · Compare FusionAuth vs CodeRabbit →
9. Kubernetes · velocity 7.5
Kubernetes v1.37 broad Beta wave hardens storage security, memory management, and lays groundwork for AI workloads.
Its velocity score of 7.5/10 reflects longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Kubernetes focuses on ai workloads, storage security and gang scheduling.
Kubernetes and FusionAuth have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Kubernetes trajectory → · Compare FusionAuth vs Kubernetes →
10. Manticore Search · velocity 7.5
Manticore Search's post-29.9.0 patch cycle is stabilizing multi-vector embeddings and concurrent BERT workloads.
Its velocity score of 7.5/10 reflects longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Manticore Search focuses on vector search, embeddings and full text search.
Manticore Search and FusionAuth have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Manticore Search trajectory → · Compare FusionAuth vs Manticore Search →
11. NATS · velocity 7.5
NATS 2.15 ships a desired-state reconciliation engine that fundamentally changes how JetStream clusters are managed.
Over the last 30 days NATS shipped 1 meaningful update vs FusionAuth's 0, most recently “NATS 2.15: Desired-State JetStream and Full Cluster Operations Suite”. Its velocity score of 7.5/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, NATS focuses on messaging, jetstream and distributed systems.
Over the last 30 days NATS has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
12. Appsmith · velocity 6.3
Appsmith is killing its own AI datasource and doubling down on security hardening — a strategic retreat from the AI feature race.
Over the last 30 days Appsmith shipped 1 meaningful update vs FusionAuth's 0, most recently “v2.4: Appsmith AI datasource EOL September 30, 2026”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where FusionAuth leans on authentication, identity and oauth, Appsmith focuses on low code, app builder and self hosted.
Over the last 30 days Appsmith has been shipping faster than FusionAuth — a point in its favour if release momentum matters to you.
Full Appsmith trajectory → · Compare FusionAuth vs Appsmith →
Frequently asked questions
What are the best alternatives to FusionAuth?
The top FusionAuth alternatives we currently track in software development tools are GitHub, Rivet, Speakeasy, Weaviate, Sanity, ranked by recent ship velocity.
How is this list of FusionAuth alternatives ranked?
Alternatives are ranked by Sparkpulse's velocity_score — release cadence + 30-day spark count + sector-relative ship rate.
Can I compare FusionAuth directly with one of these alternatives?
Yes — every card has a "Compare with FusionAuth" link to a side-by-side /compare page.