SuperMassive – Fast durable, in-memory, distributed key-value database

What it does

A distributed in-memory, durable key value database designed for massive amounts of critical data and low latency. - supermassivedb/supermassive

SuperMassive is a massively scalable, in-memory, distributed, sharded, fault-tolerant, and self-healing key-value database. Join the SuperMassive Discord server to chat with the maintainers and other users. We are always looking for feedback, bugs and discussion. ` :+ssssssssssssssssss+: ` ------------------------------- -+ssssssssssssssssssyyssss+- OS: Ubuntu 23.04 x86_64 .ossssssssssssssssssdMMMNysssso. Kernel: 6.2.0-39-generic /ssssssssssshdmmNNmmyNMMMMhssssss/ Uptime: 2 days, 5 hours, 59 mins +ssssssssshmydMMMMMMMNddddyssssssss+ Packages: 2755 (dpkg), 30 (snap) /sssssssshNMMMyhhyyyyhmNMMMNhssssssss/ Shell: bash 5.2.15 .ssssssssdMMMNhsssssssssshNMMMdssssssss. Resolution: 1080x1920,…from github.com

In the maker’s words, at launch

Hey hn! I hope you're all doing well. I’d like to share a new open-source database I’ve designed and written called SuperMassive. SuperMassive is a scalable, distributed, in-memory key-value database designed from the ground up to allow for high concurrency, fast writes, fault tolerance, and durability while…

• 
  SupersetFeb 2026 · superset.sh · ▲541

  Hey HN, we’re Avi, Kiet, and Satya. We’re building Superset, an open-source terminal made for managing a bunch of coding agents (Claude Code, Codex, etc) in parallel. - Superset makes it easy to spin up git worktrees and automatically setup your environment - Agents and terminal tabs are isolated to worktrees, preventing conflicts - Built-in hooks [0] to notify when your coding agents are done/needs attention, - A diff viewer to review the changes and make PRs quickly We’re three engineers who’ve built and maintained large codebases, and kept wanting to work on as many features in…

• 
  A proof-of-concept FoundationDB based network block device backend2018 · github.com · ▲192

  A totally proof-of-concept FoundationDB based network block device backend - dividuum/fdb-nbd

• 
  SuperHQApr 2026 · superhq.ai · ▲95

  Hey HN, I built SuperHQ, an app that lets you run coding agents in local sandboxes (powered by Shuru). No custom UI wrapping the agents, they run as CLI/TUI like they were designed to. It just provides you the tools most of us (okay, maybe just me?) needed for running multiple coding agents in parallel without worrying about breaking your system or work environment. Each agent runs in its own microVM. You mount your projects in, writes go to a tmpfs overlay so your host is never touched, and you get a unified diff view to accept or discard changes. API keys never enter the sandbox, they…

• 
  Open source, logical multi-master PostgreSQL replication2025 · github.com · ▲151

  Logical multi-master PostgreSQL replication. Contribute to pgEdge/spock development by creating an account on GitHub.

• 
  WildcatDB – A persistent key-value store built for concurrency2025 · github.com · ▲13

  Hey everyone! I hope you’re all having a great day. Today I’m sharing an experimental open-source project I’ve been working on for the past few months called Wildcat. Wildcat is an embedded persistent storage engine implementing an lsm tree similar to RocksDB and or LevelDB. The motivation for this system was to try to solve the multi-writer bottlenecks that most embedded systems incur. With that, during my journey with storage systems especially the log structured flavour I’ve implemented a lot of interesting optimizations and algorithms in regards to the write and read paths. I hope you…

• 
  Run coding agents in microVM sandboxes instead of your host machineApr 2026 · github.com · ▲63

  Hi HN, we built SuperHQ, an open source app that runs AI coding agents in isolated microVM sandboxes instead of directly on your machine. Each agent gets its own VM with a full Debian environment. You mount your projects in, writes go to a tmpfs overlay so your host is never touched, and you get a diff view to accept or discard changes. API keys never enter the sandbox. We also just launched remote.superhq.ai which acts as a remote control for SuperHQ, allowing you to access your workspaces and agents from anywhere.

• 
  /dev/null▲490

  a social network for devs

  Dev tools · 4d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 29d ago · github.com

• 
  Run full iOS 16.5 firmware on Android Devices▲419

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 17h ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 24d ago · openbot.run

• 
  Talanoa▲346

  Hi 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 · 22d ago · talanoa.email

• 
  Screen Studio 3.0▲1,832

  Beautiful screen recordings with instant shareable links

  Growth · 2025 · screen.studio

• 
  Tana▲1,665

  Put your notes to work with voice and AI

  AI · 2025 · tana.inc

• IG
  I got laid off from Meta and created a minor hit on Steam▲1,581

  I was at FB/Meta from late 2013 to early 2023, mostly working in the compiler/runtime spaces. I got hit in the spring 2023 layoff wave. I immediately started making games in my newfound free time (a lifelong interest, and I even worked in AA(A?) back ca. ~2000), and in October 2023 I stumbled upon the idea of a roguelike pachinko/plinko game inspired by Luck Be A Landlord. Things snowballed quickly, I started talking to publishers, then worked like crazy through all of 2024, almost the hardest I've ever worked in my career, and launched the game in December 2024. It's sold…

  Work · 2025

• 
  Tanka▲1,410

  AI Messenger with smart reply & long term memory for teams

  AI · 2025 · tanka.ai

• 
  Tool Finder▲1,327

  Your shortcut to better software

  AI · 2025 · toolfinder.com

• 
  I built an app to stop me doomscrolling by touching grass▲1,203

  i wanted to change the habit of reaching for my phone in the morning and doomscrolling away an hour so i built an app to help me. now i have to literally touch grass before accessing my most distracting apps the app is built in swiftui, uses the screen time apis provided by apple and google vision to recognise grass or not i'd love to get your thoughts on the concept.

  Life & fun · 2025 · touchgrass.now