
Mutuals
Unified discovery layer for experiences and people
What it does
Mutuals is SF's hottest new social app. It is a social discovery platform built around real-world experiences. Unlike platforms focused only on ticketing or invites, Mutuals combines event discovery, social coordination, communities, organizer tools, and social proof into one app. Users can discover events, see who’s going, make plans, and join communities, while hosts can manage guest lists, approvals, and check-ins. We’re also growing campus-first with school-gated communities and plans.
Does the same job
all alternatives →- HRHaven – Run a private website to share with only the people you choose2021 · havenweb.org · ▲547
- MWMeetup with other travelers in a new place2022 · travelfriends.xyz · ▲235

- IBI built a fun video meeting app with 2D physics and proximity chat2022 · flat.social · ▲166
Hi HN! https://flat.social is a web video meeting app for organising fun online meetings & social events. Each participant can move around and talk with others in their proximity. Here is a quick demo if you wanna see it in action: https://youtu.be/Y2yH3twjrx4 I’ve been on it solo for around a year right now. Tech used is Next.js, Typescript, PIXI.js on the front-end and Node, Mediasoup, Socket.io and Matter.js (physics engine) on the backend. Feel free to jump in into the demo room (https://flat.social/f/Flat.Social-Demo) to say hi, I’ll be…


More growth this month
the category →
AstraPixels▲267A pixel-art solar system at its real current positions.
Growth · 29d ago · astrapixels.com
Launched alongside, May 2026
the whole month →

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


- NW
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
- FM
Dev tools · May 2026 · github.com