| — | temporalio/temporalretry-workflow | Durable execution server: workflow state persisted as an event history, so retries, timers and long-running action sequences survive process death. 22.5k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | restatedev/restateretry-workflow | Durable execution runtime with built-in idempotency keys on invocations and a single embedded binary — far lighter to run than Temporal for the same durable-retry guarantee. 4.3k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | inngest/inngestretry-workflow | Event-driven durable step functions with automatic retry/backoff per step and a local dev server. 5.8k stars, pushed 2026-08-27. | observedrejected | Source ↗ |
| — | triggerdotdev/trigger.devretry-workflow | Background-job platform with durable retries, checkpoint/resume and concurrency controls, self-hostable. 16.1k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | hatchet-dev/hatchetretry-workflow | Postgres-backed distributed task queue with durable execution, retries and rate limits — no separate broker beyond Postgres. 7.8k stars, pushed 2026-08-27. | observedtop10 | Source ↗ |
| — | resonatehq/resonateretry-workflow | Durable promises as the primitive: async/await semantics that survive crashes, deliberately smaller surface than Temporal. 657 stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | dbos-inc/dbos-transact-tsretry-workflow | Durable workflows as a TypeScript library backed by Postgres — no separate server process, which is the lightest embeddable durable-execution seam found. 1.3k stars, pushed 2026-08-26. | observedtop10 | Source ↗ |
| — | paveg/hono-idempotencyidempotency | Stripe-style Idempotency-Key middleware implementing IETF draft-ietf-httpapi-idempotency-key-header: SHA-256 request fingerprinting to block key reuse with a different payload, optimistic locking for concurrent replays, RFC 9457 problem details, non-2xx deliberately not cached, pluggable memory/Redis/KV/D1 stores. README read directly. | observedtop10 | Source ↗ |
| — | hardcoretech/djangorestframework-idempotency-keyidempotency | DB-backed idempotency-key middleware for Django REST Framework; second-most maintained idempotency package located. 14 stars, pushed 2026-08-11. | observedregister | Source ↗ |
| — | stripe/stripe-nodeidempotency | Reference CLIENT-side implementation of idempotency-key generation and automatic safe retry against a server that honours the header. 4.5k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | upstash/ratelimit-jsrate-limit | Redis-backed rate limiting with fixed-window, sliding-window and token-bucket algorithms plus multi-region support; small enough to read end to end. 2.0k stars, pushed 2026-08-24. NOTE: canonical repo is upstash/ratelimit-js, not upstash/ratelimit. | observedtop10 | Source ↗ |
| — | envoyproxy/ratelimitrate-limit | Standalone gRPC rate-limit service with hierarchical domain/descriptor config — the production pattern for a limiter shared across many callers. 2.7k stars, pushed 2026-08-26. | observedregister | Source ↗ |
| — | ThreeDotsLabs/watermilloutbox | Go event-driven library with a first-class Forwarder/outbox component: publish inside the DB transaction, forward to the broker after commit — the transactional-outbox seam as a library. 9.9k stars, pushed 2026-08-25. | observedtop10 | Source ↗ |
| — | debezium/debeziumoutbox | CDC platform with a documented outbox-event-router SMT — the reference implementation of the transactional outbox pattern at scale. 13.0k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | obsidiandynamics/goharvestoutbox | Focused Go implementation of Postgres-to-Kafka outbox harvesting with leader election. | observedrejected | Source ↗ |
| — | openbao/openbaosecrets | Linux Foundation fork of Vault taken from the last MPL-2.0 commit before the BSL relicense; keeps dynamic secrets, leasing/renewal, transit encryption and audit under a genuine OSI licence. 7.2k stars, pushed 2026-08-27. | observedtop10 | Source ↗ |
| — | hashicorp/vaultsecrets | The incumbent secrets manager: dynamic secrets, leasing, transit encryption, broad audit. 36.2k stars, pushed 2026-08-26. | observedrejected | Source ↗ |
| — | Infisical/infisicalsecrets | Developer-friendly secrets platform with per-environment secrets, rotation and dynamic secrets; strong UX for the credential-management surface. 29.0k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | getsops/sopssecrets | CNCF file-level encryption for config and secrets with KMS/age/PGP backends; encrypts values while leaving keys readable in git. 22.9k stars, pushed 2026-08-26. | observedregister | Source ↗ |
| — | bitnami/sealed-secretssecrets | One-way-encrypted Kubernetes Secrets safe to commit to git; controller decrypts in-cluster. 9.3k stars, pushed 2026-08-27. NOTE: repo has moved to bitnami/sealed-secrets. | observedrejected | Source ↗ |
| — | oauth2-proxy/oauth2-proxytoken-broker | Battle-tested reverse proxy performing OAuth2/OIDC against many providers, with session and token storage. 14.9k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | ory/hydratoken-broker | Certified OAuth2/OIDC server with a hardened token lifecycle: issuance, refresh, rotation, revocation and introspection. 17.5k stars, pushed 2026-07-29. | observedregister | Source ↗ |
| — | dexidp/dextoken-broker | CNCF federated OIDC provider that brokers to upstream identity providers via connectors — the closest OSS analogue to a multi-provider credential broker. 11.1k stars, pushed 2026-08-24. | observedregister | Source ↗ |
| — | svix/svix-webhookswebhooks | Webhook-sending service with signature verification, retry schedules, endpoint management and replay. 3.4k stars, pushed 2026-08-26. | observedtop10 | Source ↗ |
| — | frain-dev/convoywebhooks | Webhook gateway handling both ingest and dispatch with retries, rate limiting, fan-out and a replay UI — functionally the best fit for the connector webhook plane. 2.9k stars, pushed 2026-08-27. | observedrejected | Source ↗ |
| — | hookdeck/hookdeck-cliwebhooks | Apache-2.0 CLI for local webhook forwarding and replay against the Hookdeck service. 360 stars, pushed 2026-08-24. | observedrejected | Source ↗ |
| — | modelcontextprotocol/serversmcp-runtime | Reference MCP server collection, the de facto catalog of the MCP tool ecosystem. 89.9k stars, pushed 2026-08-20. | observedregister | Source ↗ |
| — | modelcontextprotocol/registrymcp-runtime | Official community registry for MCP server discovery — the closest thing to a canonical connector catalog for the MCP ecosystem. 7.2k stars, pushed 2026-08-26. | observedregister | Source ↗ |
| — | lasso-security/mcp-gatewaymcp-runtime | Security gateway sitting between agent and MCP servers to inspect and filter tool traffic, including secret-leak detection — one of very few OSS projects owning MCP runtime safety. | observedregister | Source ↗ |
| — | Portkey-AI/gatewaymcp-runtime | Fast AI gateway with retries, fallbacks, load balancing and guardrails across providers — a mature example of the interception-point pattern applicable to tool calls. 12.8k stars. | observedregister | Source ↗ |
| — | microsoft/playwrightbrowser-runtime | The browser-automation substrate nearly every agentic browser tool builds on: cross-browser, strong isolation via contexts, deterministic waiting. 95.2k stars, pushed 2026-08-26. | observedtop10 | Source ↗ |
| — | Skyvern-AI/skyvernbrowser-runtime | LLM-driven browser workflow automation for sites with no API — directly relevant to the long tail of connectors. 22.9k stars, pushed 2026-08-27. | observedrejected | Source ↗ |
| — | browser-use/browser-usebrowser-runtime | Most-starred agentic browser library at 111.3k stars, pushed 2026-08-26; MIT, unlike the AGPL Skyvern alternative. | observedregister | Source ↗ |
| — | browserbase/stagehandbrowser-runtime | Playwright-layered automation exposing act/extract/observe primitives, allowing deterministic Playwright and AI steps to be mixed in one script. 24.1k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | e2b-dev/infrasandbox | The self-hostable Firecracker-based infrastructure behind E2B sandboxes — the actual isolation layer, as opposed to the SDK repo. 1.3k stars, pushed 2026-08-27. | observedtop10 | Source ↗ |
| — | firecracker-microvm/firecrackersandbox | AWS microVM monitor giving hardware-virtualization isolation with ~125ms boot — the strongest isolation-per-millisecond boundary available for untrusted action code. 36.3k stars, pushed 2026-08-26. | observedregister | Source ↗ |
| — | google/gvisorsandbox | Userspace kernel intercepting syscalls to isolate containers without full virtualization; runs as an OCI runtime, so it drops into existing container tooling. 19.2k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | cloudflare/workerdsandbox | The Workers runtime: V8 isolates with per-isolate memory limits and a capability-style binding model where code reaches only explicitly granted resources. 8.6k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | denoland/denosandbox | JS/TS runtime with deny-by-default permissions: --allow-net, --allow-read and friends make egress and filesystem access an explicit per-process grant. 108.3k stars, pushed 2026-08-26. | observedregister | Source ↗ |
| — | bytecodealliance/wasmtimesandbox | WASM runtime with capability-based WASI security: a module has no ambient authority and can touch only pre-opened handles the host grants. 18.6k stars, pushed 2026-08-26. | observedregister | Source ↗ |
| — | nestybox/sysboxsandbox | OCI runtime enabling unprivileged containers to run Docker/systemd inside, strengthening the container boundary without a VM. 3.8k stars, pushed 2026-08-25. | observedregister | Source ↗ |
| — | open-policy-agent/opaaction-policy | Graduated CNCF general-purpose policy engine; Rego can express per-tenant allow/deny over an action request including target host, method and parameters, evaluated as a library in-process. 12.2k stars, pushed 2026-08-27. | observedtop10 | Source ↗ |
| — | cerbos/cerbosaction-policy | Authorization service with YAML resource/action policies — markedly more readable than Rego and natively shaped as principal-performs-action-on-resource, which maps directly onto tool calls. 4.6k stars, pushed 2026-08-27. | observedregister | Source ↗ |
| — | permitio/opalaction-policy | Real-time policy and data distribution layer keeping OPA agents live-synced with policy and application data — the missing piece for revoking a tenant's connector permission instantly. 5.5k stars, pushed 2026-08-24. | observedregister | Source ↗ |
| — | apache/casbinaction-policy | Embeddable authorization library with a model/policy split and mature ports across most languages. 20.4k stars, pushed 2026-08-21. NOTE: repo now redirects to apache/casbin. | observedregister | Source ↗ |