Founded — 2021

95 startups founded in 2021

Every startup in our index founded in 2021. Browse founders, investors, location, and product details.

NE
Neon
Serverless Postgres with branching.
Dev Tools·Series B
MD
Modal
Run any Python code in the cloud, instantly.
Dev Tools·Series A
CL
Cal.com
Open-source scheduling infrastructure.
Open Source·Series A
BH
Beehiiv
The newsletter platform built for growth.
SaaS·Series B
ME
Magic Eden
The leading multi-chain NFT marketplace.
Marketplace·Series B
FN
Function Health
100+ lab tests, twice a year.
Other·Series A
NU
Nourish
Insurance-covered nutritional counseling.
Other·Series B
CD
Codeium
AI-powered code acceleration.
AI·Series C
ST
Statsig
Feature flags, experiments, and analytics in one platform.
SaaS·Series B
CX
Convex
The backend for app developers.
Dev Tools·Series A
IN
Inngest
Durable execution + workflow orchestration for developers.
Dev Tools·Seed
MI
Mintlify
Documentation that converts.
SaaS·Series A
CO
Column
The first developer-first bank.
Fintech
SZ
SigNoz
Open-source APM, logs, traces, metrics.
Open Source·Seed
CR
Cradle Bio
AI for protein engineering.
Other·Series B
LU
Luma AI
Multimodal AI for video and 3D.
AI·Series B
LA
Lakera
Security for LLM apps.
AI·Series A
LB
Liveblocks
Multiplayer infrastructure for collaborative apps.
Dev Tools·Series A
PM
Permit.io
Authorization as a service.
Dev Tools·Seed
TD
tldraw
Build whiteboards into your product.
Open Source·Seed
MD
Medusa
Open-source headless commerce platform.
Open Source·Series A
NC
NocoDB
The open-source Airtable alternative.
Open Source·Series A
IS
Impulse Space
In-space transportation for the next era.
Other·Series B
QN
Quantinuum
Full-stack quantum computing — Honeywell + Cambridge Quantum merger.
Other·Series A
JR
Jasper
AI copilot for marketing teams.
AI·Series A
AT
Attention
AI sales coach + assistant for sales reps.
AI·Seed
NE
Neon
Serverless Postgres with branching for developers
Dev Tools·Series B
ZD
Zed
A high-performance, multiplayer code editor
Dev Tools·Series A
CL
Cal.com
Open-source scheduling for everyone
SaaS·Series A
CP
Captions
AI-powered video creation for social media
SaaS·Series B
JP
Jasper
AI for marketing teams that demand results
AI·Series A
NV
Novu
Open-source notification infrastructure for developers
Dev Tools·Series A
RG
Rogo
Generative AI for investment banking
Fintech·Series D
HL
Highlight
Open source full-stack monitoring and error tracking
Dev Tools·Seed
ES
ElectricSQL
Local-first sync engine for Postgres applications
Dev Tools·Seed
QD
Qdrant
High-performance vector search engine
AI·Series A
SK
Socket
Supply chain security for open source dependencies
Dev Tools·Series A
EV
Evidence
Open source business intelligence with Markdown and SQL
Dev Tools·Seed
LG
Lago
Open source billing and metering for usage-based pricing
Fintech·Series A
RA
Recall AI
Universal API to capture data from any meeting
AI·Series A
JM
Jam
One-click bug reports that developers actually love
Dev Tools·Seed
IM
Imbue
Building AI agents that can reason and code
AI·Series B
CA
Coactive AI
AI platform for searching and understanding visual data
AI·Series B
CL
Cleanlab
AI data quality platform for trustworthy training data
AI·Series B
ZP
Zuplo
Programmable API gateway for developer teams
Dev Tools·Seed
SS
SST
Infrastructure framework for full-stack serverless apps
Dev Tools·Bootstrapped
EN
Encore
Developer-first backend framework with built-in infra
Dev Tools·Seed
GB
Grafbase
GraphQL platform with edge caching and federation
Dev Tools·Seed
TB
Typebot
Open source chatbot builder with powerful logic
SaaS·Bootstrapped
HL
Humanloop
Prompt management and LLM evaluation platform
AI·Series A
HU
Hume AI
Empathic voice AI that understands human expression
AI·Series B
CB
Cerbos
Open-source authorisation layer for any stack
Dev Tools·Series A
BS
Better Stack
Uptime monitoring, logs, and incident management
Dev Tools·Bootstrapped
KN
Knock
Flexible notification infrastructure for developers
Dev Tools·Series A
TA
Tauri
Build smaller, faster, more secure desktop apps
Dev Tools·Bootstrapped
WG
WunderGraph
API integration platform and GraphQL federation
Dev Tools·Seed
FK
Folk
The CRM for all your relationships
SaaS·Series A
IN
Instantly
Cold email platform with unlimited sending accounts
SaaS·Bootstrapped
RF
Reflect
Networked note-taking app for fast thinkers
SaaS·Bootstrapped
TN
Tana
All-in-one knowledge management for power users
SaaS·Seed
AF
AFFiNE
Open-source Notion and Miro alternative
SaaS·Series A
SG
Stigg
Product-led billing infrastructure
Fintech·Series A
OB
Orb
Usage-based billing infrastructure for SaaS
Fintech·Series B
SL
Slope
B2B buy-now-pay-later payments
Fintech·Series A
ES
Escape
API security testing and DAST for developers
Dev Tools·Series A
TW
Triple Whale
Ecommerce analytics and attribution platform
SaaS·Series B
LD
Lightdash
Open-source BI on top of dbt
SaaS·Series A
NL
NewLimit
Reversing biological aging with epigenetics
AI·Series A
CO
Colossal Biosciences
Bringing extinct species back to life
AI·Series C
EL
Elicit
AI research assistant for scientific literature
AI·Series A
HL
Halcyon
The only platform purpose-built to defeat ransomware
Dev Tools·Series C
LE
Leland
Get coaching from experts who've been where you want to go
SaaS·Series B
PL
Pallet
AI workers that handle freight operations end-to-end
SaaS·Series B
FN
Fun
Global stablecoin payments for modern fintechs
Fintech·Series A
WD
Wander
Luxury smart home rentals with hotel-level service
Marketplace·Series B
PS
Palmstreet
Buy rare plants live from expert sellers
Marketplace·Series A
GH
Ghost
B2B marketplace for brands to offload surplus inventory
Marketplace·Series B
AM
Amie
The joyful productivity app
SaaS·Series A
RZ
Row Zero
The fastest spreadsheet in the browser
SaaS·Seed
MW
Meow
High-yield treasury management for startups
Fintech·Series A
SR
SurrealDB
The ultimate multi-model database
Open Source·Series A
RW
RisingWave
Streaming SQL for real-time analytics
Open Source·Series B
BH
BoxyHQ
Enterprise SSO and directory sync in minutes
Open Source·Seed
OR
OpenReplay
Open source session replay and debugging suite
Open Source·Seed
CF
Coolify
Self-host Heroku and Netlify on your own server
Open Source·Bootstrapped
BB
Bytebase
Database DevOps and CI/CD for teams
Open Source·Series A
AF
AppFlowy
Open source Notion alternative
Open Source·Series A
NN
Notesnook
End-to-end encrypted notes app
Open Source·Bootstrapped
ME
Memos
Lightweight, self-hosted memo hub
Open Source·Bootstrapped
OB
OpenBB
Open source investment research terminal
Open Source·Series A
MS
Mathesar
Database UI as intuitive as a spreadsheet
Open Source·Bootstrapped
OM
OpenMetadata
Open standard for metadata and data discovery
Open Source·Series B
SP
Steampipe
SQL for cloud APIs and infrastructure
Open Source·Series A
RL
Rallly
Open source scheduling and meeting polls
Open Source·Bootstrapped
FZ
Firezone
Open source WireGuard-based VPN and access gateway
Open Source·Series A