Q3 2026 · Series A / Series B

Series A / Series B Startups Showing Engineering Acceleration

Growth-stage technical startups that have closed institutional rounds. Engineering signals at this stage are less about discovery and more about validation of trajectory. Currently tracking 67 series a / series b startups across 15 sectors. PhotoFlare leads with 17 commits over 14 days (+1600%).

TL;DR — At a glance

We rank 67 series a / series b startups by GitHub engineering acceleration for Q3 2026. PhotoFlare tops the list at 17 commits per 14-day window (+1600%), against a cohort average of 29commits. The most common breakout pattern this period is “Framework migration”. Rankings refresh weekly and every number links back to a public GitHub source.

Commit velocityis the number of commits a startup’s public repositories receive over a rolling 14-day window, used here as a proxy for engineering throughput. A rising velocity paired with contributor growth is the earliest public signal that a series a / series b team is scaling ahead of a fundraise.

Investor insight

At Series A/B, engineering acceleration is a trajectory signal rather than a discovery signal. A hiring burst or platform buildout often precedes the next round. Institutional investors use these signals to prioritize outreach and refine conviction before a lead term sheet.

Sector breakdown — Series A / Series B

Data Infrastructure

9 series a / series b startups

Space Tech

8 series a / series b startups

Healthcare

6 series a / series b startups

EdTech

6 series a / series b startups

Social & Community

6 series a / series b startups

Web3

5 series a / series b startups

E-commerce Infrastructure

4 series a / series b startups

Supply Chain

4 series a / series b startups

PropTech

4 series a / series b startups

Gaming

4 series a / series b startups

Enterprise SaaS

3 series a / series b startups

AgTech

3 series a / series b startups

Robotics

2 series a / series b startups

HR Tech

2 series a / series b startups

Legal Tech

1 series a / series b startup

Ranked series a / series b startups — Q3 2026

#	Company	Stage	Geo	Commits (14d)	Change	Contributors	Contrib. Growth	New Repos	Signal
1	PhotoFlare View signal profile →	Series A/B	Unknown	17	+1600%	21	+0%	0	Deploy frequency spike
2	tuva-health The community building the future of healthcare analytics View signal profile →	Series A/B	US	3	+999%	48	+0%	3	Infrastructure buildout
3	The-Mu-Foundation Non-profit, startup, free, adaptive, science-based trainer View signal profile →	Series A/B	Unknown	2	+999%	22	+0%	0	Deploy frequency spike
4	vanilophp Truly Laravel E-commerce Framework View signal profile →	Series A/B	EU	1	+999%	22	+0%	0	Deploy frequency spike
5	wevm TypeScript tools for the frontier View signal profile →	Series A/B	Unknown	5	+999%	21	+0%	0	Deploy frequency spike
6	margelo High-end App Development Agency focused on React Native. View signal profile →	Series A/B	Unknown	1	+999%	40	+0%	1	Deploy frequency spike
7	saas-js View signal profile →	Series A/B	Unknown	11	+999%	37	+0%	0	Deploy frequency spike
8	ohs-foundation This is the technical home for the OHS Software Foundation (a Linux Foundation project currently under formation) View signal profile →	Series A/B	Unknown	2	+999%	28	+0%	3	Infrastructure buildout
9	ever-co The Everything Platform for Businesses™ View signal profile →	Series A/B	US	5	+999%	34	+0%	0	Deploy frequency spike
10	etewiah Create a fully featured real estate website on Rails in minutes! ⛺ View signal profile →	Series A/B	Unknown	5	+999%	22	+233%	0	Engineering hiring burst
11	Fields2Cover View signal profile →	Series A/B	EU	5	+999%	22	+400%	0	Engineering hiring burst
12	ossimlabs Collection of repositories comprising the OSSIM and OMAR projects. Make sure you clone "ossim" repository first! View signal profile →	Series A/B	Unknown	1	+999%	34	+0%	0	Deploy frequency spike
13	VismaLietuva View signal profile →	Series A/B	Unknown	8	+999%	31	+0%	0	Deploy frequency spike
14	ConduitIO View signal profile →	Series A/B	Unknown	73	+421%	23	+400%	0	Engineering hiring burst
15	beikeshop BeikeShop is a free and open-source e-commerce system View signal profile →	Series A/B	APAC	3	+200%	21	+133%	0	Engineering hiring burst
16	eclipse-zenoh View signal profile →	Series A/B	Unknown	5	+150%	22	+125%	0	Engineering hiring burst
17	CelestiaProject View signal profile →	Series A/B	Unknown	7	+133%	34	+67%	0	Engineering hiring burst
18	fedbiomed Collaborative learning in heathcare View signal profile →	Series A/B	Unknown	13	+117%	23	+0%	0	Framework migration
19	Official-MoonDao MoonDAO is accelerating our multiplanetary future with an open platform to fund, collaborate, and compete on challenges View signal profile →	Series A/B	Unknown	104	+96%	30	+0%	0	Framework migration
20	spedas Space Physics Environment Data Analysis Software View signal profile →	Series A/B	Unknown	27	+80%	39	+226%	3	Engineering hiring burst
21	ai-shifu View signal profile →	Series A/B	APAC	99	+74%	21	+0%	0	Framework migration
22	gurkenlabs Two Bavarian brothers, one goal: Create the purest, most comprehensible Java 2D game engine out there. View signal profile →	Series A/B	EU	5	+67%	31	+0%	0	Framework migration
23	drt-hub View signal profile →	Series A/B	APAC	43	+59%	30	+0%	1	Framework migration
24	bloom-housing A framework for modern software to power affordable housing. View signal profile →	Series A/B	Unknown	19	+58%	40	+51%	0	Engineering hiring burst
25	rspatial The R packages terra, luna, raster, geosphere and friends. See "github.com/r-spatial" for "sf" c.s. View signal profile →	Series A/B	Unknown	32	+52%	49	+0%	0	Framework migration
26	OpenCyphal Open technology for real-time intravehicular distributed computing and communication based on modern networking standard View signal profile →	Series A/B	Unknown	3	+50%	24	+400%	0	Engineering hiring burst
27	evershopcommerce Open-Source NodeJS Ecommerce Platform View signal profile →	Series A/B	Unknown	30	+36%	46	+400%	0	Engineering hiring burst
28	castle-engine Cross-platform (desktop, mobile, console, web) 3D and 2D game engine supporting many asset formats (glTF, X3D, Spine...) View signal profile →	Series A/B	Unknown	28	+8%	24	+0%	0	Framework migration
29	SFDigitalServices San Francisco’s Digital Services Team is committed to transforming the public experience of City services. View signal profile →	Series A/B	US	12	+0%	35	+0%	0	Framework migration
30	BuilderIO View signal profile →	Series A/B	Unknown	445	-7%	38	+40%	2	Framework migration
31	gosqasorg Global Open Source Quality Assurance System View signal profile →	Series A/B	Unknown	16	-11%	24	+8%	0	Framework migration
32	OpenC3 Open Source. Open Architecture. Command, Control and Communication View signal profile →	Series A/B	US	110	-14%	49	+0%	0	Framework migration
33	robot-descriptions Robot descriptions and software to access them. View signal profile →	Series A/B	Unknown	10	-17%	25	+13%	0	Framework migration
34	coollabsio Software without compromise. Free, open source, and built for you. View signal profile →	Series A/B	Unknown	65	-18%	41	+81%	1	Engineering hiring burst
35	third-culture-software View signal profile →	Series A/B	Unknown	17	-19%	28	+0%	0	Framework migration
36	Zipstack View signal profile →	Series A/B	Unknown	12	-20%	29	+7%	0	Framework migration
37	TheXTech International community of TheXTech project developers, part of WohlSoft Team View signal profile →	Series A/B	Unknown	34	-21%	33	+368%	0	Engineering hiring burst
38	estuary View signal profile →	Series A/B	Unknown	39	-22%	42	+0%	1	Framework migration
39	mx-space 混合空间 Mix Space View signal profile →	Series A/B	APAC	36	-22%	26	+0%	0	Framework migration
40	DSACMS Digital Service at CMS View signal profile →	Series A/B	US	30	-23%	31	+0%	5	Infrastructure buildout
41	Vacademy-io View signal profile →	Series A/B	APAC	231	-25%	23	+0%	0	Framework migration
42	classroomio The Open Source Customer/Employee Training Software View signal profile →	Series A/B	Unknown	34	-32%	29	+65%	0	Engineering hiring burst
43	OpnForm A modern open-source form builder View signal profile →	Series A/B	EU	6	-33%	30	+40%	0	Framework migration
44	horilla View signal profile →	Series A/B	Unknown	4	-33%	47	+11%	0	Framework migration
45	Point72 View signal profile →	Series A/B	US	3	-40%	22	+200%	0	Engineering hiring burst
46	GetStream Build scalable in-app chat, feeds, and live video with AI moderation capabilities in hours, not weeks. View signal profile →	Series A/B	Unknown	9	-47%	32	+0%	0	Framework migration
47	simpledotorg The fast, free app for clinicians to track patients with high blood pressure and diabetes. View signal profile →	Series A/B	Unknown	1	-50%	25	+0%	0	Framework migration
48	pluginsGLPI Official GLPI Project Plugins organization View signal profile →	Series A/B	EU	2	-50%	30	+0%	0	Framework migration
49	tuva-health The community building the future of healthcare analytics View signal profile →	Series A/B	US	1	-50%	48	+0%	3	Infrastructure buildout
50	rocketride-org View signal profile →	Series A/B	US	25	-52%	44	+0%	1	Framework migration
51	calagopus View signal profile →	Series A/B	EU	38	-52%	24	+0%	1	Framework migration
52	immutable View signal profile →	Series A/B	APAC	7	-53%	21	+0%	0	Framework migration
53	orbiternassp View signal profile →	Series A/B	Unknown	7	-53%	37	+0%	0	Framework migration
54	orangecoding ❤️ Fredy - [F]ind [R]eal [E]state [D]amn Eas[y] - Fredy keeps searching for new apartments, houses, and flats in Germany on platforms like ImmoScout24, Immowelt, Immonet, eBay Kleinanzeigen, and WG-Gesucht and instantly delivers the results to you via Slack, Telegram, Email, Discord or ntfy, so you can focus on the more important things in life ;) View signal profile →	Series A/B	Unknown	4	-56%	43	+0%	0	Framework migration
55	the-momentum Building scalable, secure, and compliant healthtech solutions. We empower startups and scaleups to innovate and grow and View signal profile →	Series A/B	Unknown	17	-57%	48	+19%	0	Framework migration
56	copper-project Home for copper-rs, the deterministic robot OS built in Rust. View signal profile →	Series A/B	US	16	-57%	34	+2%	3	Infrastructure buildout
57	aureuserp The powerful Open Source ERP platform built on Laravel to optimize and streamline your business operations. View signal profile →	Series A/B	Unknown	22	-66%	20	+0%	0	Framework migration
58	Official-MoonDao MoonDAO is accelerating our multiplanetary future with an open platform to fund, collaborate, and compete on challenges View signal profile →	Series A/B	Unknown	31	-69%	30	+0%	0	Framework migration
59	Open-Cap-Table-Coalition View signal profile →	Series A/B	Unknown	4	-69%	20	+300%	0	Engineering hiring burst
60	opensensorhub Java-based middleware for building better Sensor Webs and the Internet of Things View signal profile →	Series A/B	Unknown	3	-70%	22	+0%	0	Framework migration
61	airbytehq Open source data replication platform and context layer for AI agents. View signal profile →	Series A/B	US	1	-75%	31	+0%	0	Framework migration
62	opensource-socialnetwork Social Networking CMS written in php similar to facebook View signal profile →	Series A/B	US	3	-77%	23	+0%	1	Framework migration
63	KyrptonaughtMC Inventory Sorter for Minecraft View signal profile →	Series A/B	Unknown	2	-83%	24	+0%	0	Framework migration
64	ar-io All source code for ar.io; the global network, protocol, and currency that enables the permaweb. View signal profile →	Series A/B	Unknown	12	-83%	25	+0%	4	Infrastructure buildout
65	masslight View signal profile →	Series A/B	Unknown	66	-87%	28	+0%	0	Framework migration
66	haxtheweb Tools View signal profile →	Series A/B	US	5	-90%	42	+0%	1	Framework migration
67	goodrain Rainbond is Cloud Native apps manage platform, Make apps manage and apps delivery easier. Rainbond is open source produc View signal profile →	Series A/B	APAC	2	-92%	20	+0%	0	Framework migration

Sorted by commit velocity change (14-day window). Stage from contributor count + enrichment data. Last updated Q3 2026.

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Frequently Asked Questions

Which series a / series b startups are showing the strongest engineering signals in Q3 2026?

In Q3 2026, PhotoFlare (AgTech) leads series a / series b startups with 17 commits over a rolling 14-day window (+1600% change) and 21 active contributors. Across all 67 tracked series a / series b startups, the average 14-day commit velocity is 29 commits. The dominant engineering signal pattern is "Framework migration".

What should investors look for in series a / series b engineering signals?

Which sectors have the most series a / series b activity?

In Q3 2026, the top sectors by series a / series b startup count are Data Infrastructure (9), Space Tech (8), Healthcare (6), EdTech (6), Social & Community (6). Each sector page has its own ranked list and sector-specific context.

How is stage determined in these rankings?

Stage is derived from contributor count, team-size enrichment data, and funding history where publicly available. Stage classifications use broad buckets (Pre-Seed, Seed, Series A/B, Growth) to provide meaningful sample sizes. These are estimates — always verify independently before any investment action.

Other stages

Pre Seed Seed Growth

Sector breakdown — Series A / Series B

Ranked series a / series b startups — Q3 2026

Five breakout startups, every Sunday — before the round gets crowded

Frequently Asked Questions

Which series a / series b startups are showing the strongest engineering signals in Q3 2026?

What should investors look for in series a / series b engineering signals?

Which sectors have the most series a / series b activity?

How is stage determined in these rankings?

Other stages

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Sector breakdown — Series A / Series B

Ranked series a / series b startups — Q3 2026

Five breakout startups, every Sunday — before the round gets crowded

Frequently Asked Questions

Which series a / series b startups are showing the strongest engineering signals in Q3 2026?

What should investors look for in series a / series b engineering signals?

Which sectors have the most series a / series b activity?

How is stage determined in these rankings?

Other stages