50 Best Developer Tools Companies to Watch in 2026

The most prominent developer tools companies ranked by global prominence, funding activity, and market position. Showing the top 50 out of 2,851 companies tracked on Fsome.

2,851
Total Companies
$57.5B
Total Funding
$20.2M
Avg Funding
San Francisco
Top Location
# Company Location Employees Total Funding Last Round Last Funded
1
Replit
Replit is the most secure agentic platform for production-ready apps.
Foster City $872.0M Series D 2026-03-11
2
Lovable
Lovable provides an AI-driven platform enabling users to generate and deploy web…
Dover $552.5M Series B 2025-12-18
3
Harness
Harness provides a software delivery platform that helps engineering teams build…
San Francisco $775.4M Series E 2025-12-11
4
Baseten
Baseten is an AI infrastructure company that integrates machine learning into bu…
San Francisco 101 - 250 $585.0M Series Unknown 2026-01-20
5
Chainguard
Chainguard is a cloud-native development platform that provides low-to-zero CVE …
Kirkland $892.0M Debt Financing 2025-10-23
6
Anysphere
Anysphere is an applied research lab focused on automating coding through innova…
San Francisco $3.4B Series Unknown 2025-12-08
7
GitLab
GitLab is a web-based Git repository manager that offers a variety of features f…
San Francisco $413.5M Series E 2019-09-17
8
Honeycomb
Honeycomb provides full-stack observability for engineering teams to understand,…
San Francisco 101 - 250 $146.9M Series D 2023-04-06
9
Anything
Anything is an AI app builder that lets people make money on the internet. Ships…
San Francisco 1 - 10 $19.5M Series A 2025-09-29
10
Neon
Neon is a software development company specializing in open-source cloud-native …
Menlo Park 101 - 250 $129.6M Series Unknown 2024-08-07
11
Digital Asset
Digital Asset builds privacy-focused blockchain tools that enable institutions t…
New York 101 - 250 $492.2M Corporate Round 2025-12-04
12
zerohash
zerohash makes it effortless to bring your business on-chain.
Chicago 101 - 250 $282.1M Series D 2025-09-23
13
LaunchDarkly
LaunchDarkly is a feature management platform that allows software development t…
Oakland 251 - 500 $330.3M Series D 2021-08-10
14
monday.com
Monday.com is a work operating system where organizations of any size can create…
Tel Aviv 1K - 5K $384.1M Post Ipo Equity 2021-06-10
15
Sonar
Sonar provides open-source and commercial code analyzers to help developers mana…
Geneva 501 - 1K $457.0M Series B 2022-04-26
16
Railway
The all-in-one intelligent cloud provider
San Francisco 11 - 50 $120.0M Series B 2026-01-22
17
Bridge
Bridge is developer of an application programming interface for money movement w…
San Antonio 11 - 50 $58.0M Series A 2024-08-29
18
Clay
Clay is an AI-driven sales and marketing company that equips growth and sales te…
New York 101 - 250 $202.0M Series C 2025-06-13
19
Graphite
Graphite is an open source CLI and a code review dashboard.
New York 11 - 50 $72.0M Series B 2025-03-18
20
Figma
Figma is a collaborative design tool that enables teams to create, prototype, an…
San Francisco 1K - 5K $1.4B Post Ipo Equity 2025-12-08
21
CAST AI
CAST AI is the leading Kubernetes automation platform that cuts AWS, Azure, and …
Miami 101 - 250 $181.0M Series C 2026-01-12
22
Langfuse
Open source observability & analytics for LLM apps
Berlin 1 - 10 $4.0M Seed 2023-11-07
23
TrueLayer
TrueLayer powers smarter, safer and faster online payments by combining real-tim…
London 251 - 500 $321.8M Series Unknown 2026-02-19
24
TestMu AI
World’s first full-stack Agentic AI Quality Engineering platform.
San Francisco 251 - 500 $108.0M Series D 2024-12-10
25
SurrealDB
SurrealDB is an AI-native, multi-model database that combines various data model…
London 11 - 50 $44.0M Series A 2026-02-17
26
Endor Labs
Application Security for the AI-Software Development Era
Palo Alto 101 - 250 $188.0M Series B 2025-04-23
27
Vantage
Vantage is a cloud cost management and optimization platform that allows develop…
New York 101 - 250 $25.0M Series A 2023-03-07
28
CloudZero
CloudZero is a cloud cost optimization platform that enables organizations to an…
Boston 101 - 250 $119.1M Series C 2025-05-28
29
Dedalus Labs
Dedalus Labs is a Software Development firm offering AI based MCP gateway servic…
San Francisco 1 - 10 $11.5M Seed 2025-10-15
30
Fern
Start with an API spec. Generate SDKs in multiple languages and API documentatio…
New York 11 - 50 $22.3M Series A 2025-04-10
31
Squarespace
Squarespace is a website building and hosting platform that helps users create w…
New York 1K - 5K $578.5M Post Ipo Secondary 2023-11-15
32
Galileo
Galileo.ai is an AI platform that provides services for developing, testing, mon…
San Francisco 101 - 250 $68.1M Series B 2024-10-15
33
Acumatica
Acumatica is a cloud ERP system that offers business management solutions for co…
Bellevue 501 - 1K $48.3M Series C 2018-06-18
34
UiPath
UiPath is a software company that designs and develops robotic process automatio…
New York 1K - 5K $2.0B Post Ipo Equity 2023-03-04
35
Sentry
Sentry is a developer of an application monitoring platform that helps developer…
San Francisco 251 - 500 $217.0M Series E 2022-05-04
36
Backbase
Backbase builds AI-powered banking software that helps financial institutions mo…
Amsterdam 1K - 5K $127.4M Debt Financing 2024-11-18
37
Stack Overflow
Stack Overflow is a platform for developers and programmers to share knowledge a…
New York 251 - 500 $153.0M Series E 2020-12-01
38
Coder
Coder provides open-source tools and an enterprise platform that makes it easier…
Austin 101 - 250 $172.8M Series C 2026-04-01
39
Reflection AI
We're building frontier open intelligence and making it accessible to all.
New York 101 - 250 $2.1B Series B 2025-10-09
40
Tonic.ai
Tonic.ai makes data usable for AI and software innovation to accelerate engineer…
San Francisco 51 - 100 $45.0M Series B 2021-09-29
41
Port
Port is an agentic engineering platform enabling the software industry to transi…
Tel Aviv 101 - 250 $160.0M Series C 2025-12-11
42
Arcade.dev
Arcade.dev helps AI Agents securely connect to APIs, data, and other systems
South San Francisco 11 - 50 $12.0M Seed 2025-03-18
43
Arcjet
Arcjet is a security platform that adds bot detection, rate limiting, and attack…
San Francisco 1 - 10 $12.1M Series A 2025-10-08
44
Redpanda Data
Redpanda is pioneering the agentic data plane ’ AI infrastructure to connect age…
San Francisco 101 - 250 $265.5M Series D 2025-04-03
45
Testlio
Testlio’s managed crowdsourced testing platform connects experts with engineerin…
San Francisco 101 - 250 $20.5M Series B 2021-10-26
46
Cubist
Cubist is a developer tools and infrastructure company that helps web3 engineers…
San Diego 11 - 50 $7.0M Seed 2023-03-09
47
DataLane
DataLane utilizes AI to transform unstructured local business data into organize…
New York 11 - 50 $22.5M Series A 2025-12-16
48
Netlify
Netlify is the AI-native web development platform where agents and developers bu…
San Francisco 101 - 250 $212.1M Series D 2021-11-17
49
CodeRabbit
CodeRabbit offers software tools that perform automated code reviews using artif…
Walnut Creek 101 - 250 $87.6M Series B 2025-09-16
50
Crossmint
Crossmint is an all-in-one platform for enterprise-grade APIs for wallets, stabl…
New York 51 - 100 $23.6M Series Unknown 2025-09-25