Investors / South Africa / Grindstone
Grindstone
Accelerator · Cape Town, South Africa · Middle East and Africa
Grindstone runs a structured entrepreneurship development programme and accelerator that helps high-growth, innovation-driven companies build the fundamentals to scale and become fundable. It also operates Grindstone Ventures, a post-seed fund investing in companies from its cohorts, and is jointly owned by Knife Capital and Thinkroom Limited.
Invests inAI & Machine LearningFintech
In its own wordsacceleratorgrowthstartupsafricapost-seedentrepreneurship
Your fit with Grindstone
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsGrindstone lists 4 checked portfolio companies on its own site. Its largest themes are AI & Machine Learning (43%), Fintech (29%) and Education (14%). It invests most often alongside Chui Ventures, Digital Africa Ventures and E3 Capital.
No funding round on record names Grindstone yet, so the figures come from its portfolio page.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 43% | 18% |
| Fintech | 29% | 12% |
| Education | 14% | 7% |
| Human Resources | 14% | 1% |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers4100%
- No longer answers00%
- Points to another company00%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Chui Ventures | 1 |
| Digital Africa Ventures | 1 |
| E3 Capital | 1 |
Co-investor network
who it backs companies with, and who they back togetherCompare Grindstone head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
4 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| AgrilogiQ equips growers and tunnel builders with comprehensive poly-greenhouse automation software and hardware components. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Gwork helps people use what they learn at work by turning a learning session into a clear workplace action, supported practice and a review of what happened. | EducationHuman Resources | Portfolio page | ||
| KUDOS ONE provides tools to manage Environmental, Social and Governance factors in a cost-efficient way | Fintech | Portfolio page | ||
| Locstat is a graph intelligence platform that enables organisations to rapidly scale next generation data solutions | FintechAI & Machine Learning | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- grindstonexl.com
- Last read
- 5 Nov 2026
- Watching since
- 6 Nov 2026
- Companies checked
- 4
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
Get Grindstone's profile as data
Pull Grindstone's portfolio, co-investors and changes through one API key or MCP, open every portfolio row, compare it with other firms, and get an email when it adds a company or files a fund.
Work email, sign-in link by email. Already have an account? Log in- Ask AI5 plain-English investor searches a day
- Full listsEvery portfolio row and two-firm overlap
- API and MCP100 REST or MCP calls a month, one key
- AlertsFollow 5 investors for portfolio and fund changes
$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/grindstonexl.com
# also
GET /v1/firms/grindstonexl.com/portfolio
GET /v1/firms/grindstonexl.com/coinvestors
GET /v1/firms/grindstonexl.com/news