Top Convertible Note Investors for Startups [2025]

SixThirty CYBER

DIGITALHUB.DE

Accelerating Innovation.

Quake Europe 5G Accelerator

An early stage international accelerator that targets seed level investments in consumer focused 5G tech ventures

BoortmaltX Accelerator

Partner with the biggest malting company in the world.

StartupGuru

Startup Incubator for Non-Technical Founders

AF Ventures

AF Ventures, Formerly AccelFoods, invests innovative food and beverage companies.

gener8tor Sustainability Accelerator

Accelerating and Investing in Sustainability and Climate Tech Startups

Venture Out

A Seattle-based organization that supports pre-seed, aspiring entrepreneurs with strong domain expertise from large tech companies to launch startups.

EIT Food RisingFoodStars

EIT Food RisingFoodStars, co-funded by the EU, is a leading accelerator advancing agri-food innovation in Europe, supporting startups with mentorship and funding access to drive a sustainable future.

Pi Labs

Grow your business faster with funding and support from Pi Labs, Europe’s first venture capital firm focused on technology innovations in the real estate sector

VertueLab Climate Impact Fund

To unleash innovation and entrepreneurship that will solve environmental challenges and catalyze shared economic prosperity.

SixThirty

Growth Through Collaboration. The Gateway Between Startups and Incumbents

Fast Track Malmo

We help talented teams accelerate their growth and raise their first VC round

Next AI

For entrepreneurs looking to solve global challenges with AI enabled solutions

Sampo Accelerator The Forge

Growing great founders

SEK Lab Edtech Accelerator

SEK Lab is the first Edtech Accelerator in Spain to make you validate and scale your company

Techstars Sustainability Paris Accelerator

We invest in early stage high-growth startups looking to build a better future thanks to technology.

VenturePad Impact Accelerator

Go Further Together

2080 Venture

We invest in emerging markets and turn ideas into legendary companies

Techstars Sustainability Paris

Techstars Sustainability Paris accelerator invests in early stage high-growth startups looking to build a better future thanks to technology.

Quake New York

An early stage international accelerator that targets seed level investments in consumer focused 5G tech ventures

Cedars-Sinai Accelerator

Transforming healthcare quality, efficiency, and care delivery by helping entrepreneurs bring their innovative technology products to market

M Accelerator

if you can't communicate your business model with a powerful idea, you won't be able to build it.

Cannabiz Incubator

Create & Innovate

StudioAlpha

Play in San Francisco

BoortmaltX

Accelerating Early-Stage Startups

SixThirty Global FinTech Fund

At SixThirty we connect bold early-stage companies in fintech insurtech privacy and digital health with corporate institutions to power growth.

Crowdcube

Crowdcube enables individuals to invest in small companies in return for equity or an annual return.

StartFast Ventures

We invest to help founders go from early revenues and angel money to hockey stick growth and larger VC rounds

Bayer G4A Partnerships Program

Health for all through digital health

The Blox

Shaping tomorrow's Web, today.

Congruent Ventures

Congruent Ventures Website

Forest Valley Sandbox Program

At Forest Valley, we connect emerging climate tech solutions to investors, corporates, and the public sector

VC Travel

Venture Capital Travel – Investors & Advisors

Sustainable Impact Accelerator

Sustainable Impact Accelerator is Asia's first VC-backed accelerator for impact enterprises.

Open Accelerator

Call for Women's Health Innovations

FONGIT

We build companies

Harbor Accelerator

Get guaranteed investment from a $100k seed fund, free space, mentorship, curriculum, experts in marketing / accounting / law, and a huge pitch event in September. Know any start-ups ready to grow?

The Impact Engine

Impact Engine is a venture capital and private equity firm investing in companies driving positive impact in economic empowerment education environmental sustainability and health.

First Star Ventures

Investing with conviction in visionary technical founders inventing the future.

StartVC

Increase the chances of becoming the next Brazilian unicorn

Beam Angel Network

Invests in high potential and exceptionally led companies that happen to be founded by women.

Start.coop

Building a more equitable and resilient economy by cultivating the next generation of transformative cooperative businesses with ambitions of scale.

Alumni Ventures Group

Alumni Ventures offers diversified venture portfolios to accredited investors into highly competitive deals that individuals typically do not have access to on their own.

Ocean Azul Partners

Ocean Azul | Ocean Azul Partners

Scale

Equipping fearless founders with knowledge and capital

RedZone

A high-tech hub for startups in Materials Science, powered by SAES. A tailored program for scientists, engineers and inventors. A new way to grow your deep-tech innovations.

Launchpool Web3 Techstars Accelerator

Working with entrepreneurs building in web3 with blockchain technology and tokenisation protocols driving towards the decentralised future.

Venture Catalysts

India's 1st Integrated Incubator

HelpTap

Democratizing startup building & investing

Startup Haven

We help build cogent growth stories.

build3 impact Accelerator

we help you build impact ideas into startups.