SignaKit - Feature Flags & Experiments
Feature flags & A/B testing for engineering teams
SignaKit - Feature Flags & Experiments launched on May 11, 2026 with 3 votes, #3,449 of 20,538 launches that month and more than 50% of that year's launches.
What it does
SignaKit is a developer-first feature flag and experimentation platform. Ship faster with ~0.2ms flag evaluation, built-in A/B testing, multi-armed bandits, targeted delivery, and SDKs for 11 languages. Free plan and usage-based pricing from $39/month — no per-seat fees.
Feature flags, A/B testing, and multi-armed bandit experimentation for engineering teams. Flag evaluations and custom events are always free — only exposure tracking counts.
The complete experimentation platform for engineering teams. Feature flags, A/B tests, and multi-armed bandits — with event-based pricing that never charges per seat. Targeted feature flags, A/B tests, and multi-armed bandits. Roll out features confidently with instant kill switches and precise traffic control. Custom event tracking for any application — web, mobile, or server-side. Inspect events as they arrive in the live debugger, define your own schemas, and sync your complete event stream to your data warehouse. No vendor lock-in. SignaKit Flags gives your team precise control over every rollout — targeted flags, A/B tests, and multi-armed bandits, all in one platform. Turn any feature…from signakit.com
Does a similar job
all alternatives →

Flipt v2Oct 2025 · flipt.io · ▲178Hey all, I'm the founder of Flipt, an open-source (https://github.com/flipt-io/flipt) feature flag tool that I (and others) have been working on for the past few years. About a year or two ago we added support for serving flag state from various non-relational declarative stores like Git, OCI, Object Store, etc. Many of our users came to love the git-backed storage, as it allows them to keep their feature flags close to their code in there organization's repos. But they had one (rather large) ask, and that was the ability to use the UI to manage flag state changes and…
SigNoz – open-source alternative to DataDog, NewRelic2022 · github.com · ▲510We just released a major upgrade to SigNoz with support for Logs management based on ClickHouse. Would love to get any feedback from the community here on what you think and any questions you may have for us Many big companies like Uber and Cloudflare have been shifting to ClickHouse as their main workhorse for Logs management seeing much better performance. for e.g Cloudflare recently shifted from Elastic to ClickHouse and are seeing 8x improvement in memory/cpu resource requirement in ingestion. This is our first release with Logs support and we have added support for: - Filtering…
Signadot2022 · signadot.com · ▲187Hi again HN, we’re Arjun and Anirudh, founders of Signadot (YC W20). Signadot helps teams developing microservices test their changes using lightweight environments called “Sandboxes”. We use a relatively new approach, using traffic labeling (using OpenTelemetry) and request routing (using a Service Mesh) to isolate environments in a shared Kubernetes cluster. Today, we’re launching a new feature to help developers with local testing of microservices during the iterative development process. When we initially launched in September last year…
Flags SDK by Vercel2025 · flags-sdk.dev · ▲433Free, open-source library for using feature flags in Next.js
More dev tools this month
the category →

open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com

Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 23d ago · openbot.run
Talanoa▲343Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai



Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com

🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md
Dev tools · May 2026 · github.com