Dev tools · alternatives · 2026
24 alternatives to Knock – Notification Infrastructure for Developers
Hey HN! I’m Chris – one of the co-founders at Knock (https://knock.app). Knock is notifications infrastructure for developers. We provide a set of flexible API primitives you can use to power complex notification systems, without having to roll your own notifications infrastructure in-house. In short: we built notifications so you don’t have to. We learned about scaling notifications systems the hard way. Previously, my co-founder and I worked together at Frame.io, where we saw the upside of product notifications as well as the pain involved in building and maintaining them. With…
Knock is a notification infrastructure platform for developers that provides APIs and tools to build complex notification systems without managing infrastructure in-house. It enables developers to quickly deploy… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Knock – Notification Infrastructure for Developers launched in 2022; newer entries below may have overtaken it.
- 1
- 2
Knock CLI▲104Bring your notification infrastructure to your fingertips
2023 · knock.app · its alternatives →
- 3
Build, manage, and ship customer messaging from Slack
Jun 2026 · knock.app · its alternatives →
- 4
Slack▲2,714Be less busy. Real-time messaging, archiving & search.
2013 · slack.com · its alternatives →
- 5
SuprSend▲406We as developers, build and maintain many services in code, one of them being notification service. In the last 5-7 years, API-to-user communications have exploded across SMS, email, chat apps, mobile, and web push. As a consequence, notification service handling them has become quite complex. Developers spend time building integrations with multiple providers, create templates for each channel, managing scheduling and routing based on preferences, maintaining queues to deliver notifications on time while managing scale. Besides, product teams have poor visibility on notifications as…
2022 · suprsend.com · its alternatives →
- 6
Knock-Knock.net is a live honeypot dashboard showing real-time bot attacks by protocol, source country, ISP, username, password, and IP across SSH, Telnet, FTP, RDP, SMB, SIP, HTTP, and SMTP services.
Feb 2026 · knock-knock.net · its alternatives →
- 7
Trigger event-based messaging from Stripe, Clerk, Supabase
Apr 2026 · knock.app · its alternatives →
- 8
Hey HN, I'm Chris, CTO of Knock (https://knock.app). We built email.info because every developer we talk to asks the same question: which email provider should I use? The existing resources are mostly vibes — "Best of" listicles, anonymous Reddit threads, or LLM answers trained on that same content. Objective performance data is always missing. Knock is a notification infrastructure platform, so we send billions of API requests to downstream email providers every year. We aggregated that data into a public dashboard covering 10 providers (SendGrid, Postmark, Resend, Mailgun, Amazon…
Mar 2026 · knock.app · its alternatives →
- 9
Notify▲791Get notified in Slack when your startup is mentioned online
2015 · timer.now · its alternatives →
- 10
Build apps on top of Facebook Messenger
2015 · messenger.com · its alternatives →
- 11
- 12
Knock▲168Knock-Knock.net is a live honeypot dashboard showing real-time bot attacks by protocol, source country, ISP, username, password, and IP across SSH, Telnet, FTP, RDP, SMB, SIP, HTTP, and SMTP services.
Mar 2026 · tryknock.app · its alternatives →
- 13
Stream Chat▲327Build, code and ship in app messaging in a few hours
2019 · getstream.io · its alternatives →
- 14
Build scalable realtime infrastructure for your apps
2018 · pusher.com · its alternatives →
- 15
Hey HN, I am building an open source platform to make on-call better and less stressful for engineers. We are building a tool that can silence alerts and help with debugging and root cause analysis. We also want to automate tedious parts of being on-call (running runbooks manually, answering questions on Slack, dealing with Pagerduty). Here is a quick video of how it works: https://youtu.be/m_K9Dq1kZDw I hated being on-call for a couple of reasons: * Alert volume: The number of alerts kept increasing over time. It was hard to maintain existing alerts. This would lead to a lot…
2024 · github.com · its alternatives →
- 16
Build your bot and reach 900 million people around the world
2016 · developers.facebook.com · its alternatives →
- 17
- 18
Send push notifications programmatically at scale
2016 · pusher.com · its alternatives →
- 19
- 20
The <Inbox /> infrastructure for modern products. Novu has 98 repositories available. Follow their code on GitHub.
2023 · github.com · its alternatives →
- 21
KnockKnock!▲187Minimal circular video calls that start with a "door" knock
Dec 2025 · apps.apple.com · its alternatives →
- 22
- 23
#Startup Chat▲358The global startup community, on Slack
2014 · hashtagstartup.co · its alternatives →
- 24
Ably Chat▲73Hey HN, Staff Engineer at Ably here. Over the past few months I've been speaking to engineers building AI assistants, copilots, and agentic workflows (over 40 companies at this point), with particular focus on cloud-hosted agents. I expected the hard problems to be in model selection, prompt engineering, and orchestration. Instead, the same infrastructure challenges kept coming up: realtime sync between agents and end clients is surprisingly painful to get right. - Managing and scaling WebSocket or SSE connections between agents and clients - Buffering messages server-side and implementing…
Apr 2026 · ably.com · its alternatives →
Also compare
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →