How to Find Climate Tech Software Companies Under 20 Employees (2026)

Quick Answer: The fastest way to find climate tech software companies under 20 employees is Origami — describe your ICP in plain English, and its AI agent searches the live web to build a verified contact list. For manual approaches, you’ll need to combine LinkedIn Sales Navigator, Crunchbase, and tools like Hunter.io, but expect hours of research and patchy data quality.

Think you can just type "climate tech software" into LinkedIn and pull up a neat list of 15-person startups? If only it were that easy. The reality is that the most promising early-stage climate software companies — the carbon-accounting platforms, renewable‑energy analytics tools, and supply‑chain decarbonization apps — are precisely the ones traditional databases miss. Founders are heads‑down building product, their LinkedIn profiles might be sparse or outdated, and they haven’t yet pitched themselves to every data vendor. Yet if you’re selling to this vertical, these are the accounts that can grow into multimillion‑dollar relationships.

Why climate tech startups under 20 employees are invisible to most prospecting tools

Static contact databases like Apollo and ZoomInfo were built for established enterprises, not pint‑sized climate software firms. They aggregate data from corporate registries, job boards, and public filings — sources that move slowly. A startup that raised a pre‑seed round three months ago and just launched its first product might not appear in those databases for a year, if ever. Meanwhile, its founders are connecting with potential customers through niche Slack communities, not optimizing their LinkedIn presence.

One founder selling to climate startups told us: "LinkedIn is not where these founders live. I needed email addresses for CEOs at five‑person carbon‑accounting companies, and Apollo came back empty. My AEs were just copy‑pasting stuff from Crunchbase into Gmail." That “archaic” workflow — toggling between four or five tools and manually piecing together contact records — is something we hear constantly from sales teams targeting the early‑stage climate space.

Traditional platforms also filter by employee count using outdated headcounts. A company might list 12 employees on its website but still show 50 in a database from a previous funding round. Conversely, a brand‑new startup with a team of two that hasn’t yet filed D&B records might be invisible altogether. Relying on static databases means you’re effectively ignoring a massive swath of the addressable market.

What kind of tools actually find small climate tech software companies?

To prospect this niche successfully, you need tools that go beyond stale databases and adapt to the way these startups present themselves online. Here’s how the top options stack up.

Tool	Free Plan (Yes/No)	Starting Price	Best For	Main Limitation
Origami	Yes — 1,000 credits	Free, then $29/mo	Live web search + outreach from one prompt	Not a CRM; no pipeline management
Clay	Yes — 500 actions/mo	$0	Custom data enrichment workflows	Steep learning curve; requires workflow building
Apollo	Yes — 900 annual credits	Free, then $49/mo	Large static database for general B2B	May miss very new or unfunded startups
LinkedIn Sales Navigator	No — paid only	$99.99/mo	Manual browsing and relationship mapping	No contact data export; limited to LinkedIn profiles
Hunter.io	Yes — 50 credits/mo	Free, then $34/mo	Finding emails from known domains	Requires a domain list; doesn’t build prospect lists

Origami — the tool we built to solve exactly this problem — starts free with 1,000 credits and no credit card. Instead of forcing you to build multi‑step workflows or navigate dropdown filters, you just type a prompt like “climate tech software companies under 20 employees in North America that have raised seed funding.” Origami’s AI agent crawls the live web — company websites, LinkedIn profiles, Crunchbase, Google Maps, news articles — and returns a list of verified contacts with names, emails, phone numbers, and company details. Because it searches live, it finds startups the same week they launch. It also includes built‑in email and LinkedIn sequencing, so you can turn that list into outreach without leaving the platform.

Clay is beloved by data‑savvy teams who need to build elaborate enrichment flows — pulling GitHub commits, job changes, and funding events into a single table. But its power comes with a steep learning curve. A sales leader we spoke with said, “I found Clay to be a little overwhelming. If I can’t figure it out in 20 minutes, my reps definitely won’t.” For a straightforward list‑building job like “find climate tech software companies under 20 employees,” Clay demands you construct a waterfall of enrichments that Origami handles in one sentence.

Apollo gives you a huge database of pre‑indexed contacts, which works fine for well‑established SaaS companies. But Apollo’s data refresh cycles mean a startup that pivoted six months ago or just raised a seed round might appear under its old name or with outdated headcount. Because climate tech is moving so fast, Apollo often misses the very companies you want to target.

LinkedIn Sales Navigator is great for manual browsing — you can search by industry and company size — but it doesn’t give you email addresses or phone numbers. You still need a second tool to enrich those contacts. And if a founder isn’t active on LinkedIn (common in the climate tech space), they won’t appear in your searches at all.

Hunter.io can find email addresses if you already have a list of company domains, but it won’t do the prospecting legwork for you. You’ll need to build the initial list somewhere else, making it a complementary tool rather than a complete solution.

How to build a targeted list of climate software startups in minutes (not hours)

When we run this exact use case — "US‑based climate tech software companies under 20 employees, founded after 2025, focused on carbon accounting or energy analytics" — Origami typically returns 40–60 verified contacts in under two minutes. That’s a list you can immediately feed into a sequence.

Here’s a step‑by‑step approach you can replicate.

1. Write your ICP as a single natural‑language prompt

Be as specific as possible about industry, size, location, and any signals you care about. For example: “Climate tech software companies under 20 employees in Europe that sell to enterprise supply chain managers. Include companies that use words like ‘decarbonization,’ ‘scope 3,’ or ‘carbon footprint’ on their website.”

Valid signals can include:

• Job openings for specific roles (an engineering hire suggests the product is alive)
• Recent funding announcements on TechCrunch or Crunchbase
• GitHub activity or open‑source contributions
• Mentions in climate‑tech market maps or Y Combinator directories

Because Origami’s AI agent interprets the prompt and searches the web dynamically, you don’t have to restrict yourself to rigid filters. You can describe the kind of startup you’d recognize if you saw their pitch deck.

2. Let the AI agent work — and watch for hidden gems

Unlike a static database that returns the same tired results every time, a live web search uncovers companies that haven’t been indexed anywhere else. We’ve seen Origami pull back startups with a two‑month‑old website and zero LinkedIn followers, simply because the AI found their Crunchbase profile or a guest blog post by the founder. One sales director targeting climate‑tech SaaS told us: “Origami found a company I’d never heard of that was exactly what my AE was looking for. We would’ve missed it with Sales Nav alone.”

The output is a clean table of contacts — names, titles, direct emails, LinkedIn URLs, and company descriptions — that you can export or immediately sequence.

Don’t stop at the list. Make your outreach count.

Finding the right prospects is only half the battle. The real pain point sales teams face is what happens next: the dreaded copy‑paste trap. “I have a 29‑page Claude prompt for writing personalized emails,” one AE told us, “but I’m still copying and pasting the text into Gmail and managing sequences in Salesforce. It’s ridiculous.”

That’s why an all‑in‑one approach matters. Origami’s built‑in sequencer (available on all paid plans) lets you create multi‑step email and LinkedIn campaigns directly from your list. The AI can draft messages that reference the stage‑specific pain points of climate startups — like the cost of manual carbon reporting or the challenge of securing enterprise pilots — making your outreach feel tailored, not templated.

If you’re using separate tools, the minimum workflow looks like this: list from LinkedIn Sales Navigator → enrichment via Hunter.io or Lusha → sequence via Outreach or Lemlist → CRM logging in Salesforce. Every step adds friction and introduces data rot. Consolidating prospecting and outreach into one platform keeps your data fresh and your reps focused on selling.

What metrics should you track when prospecting climate tech startups?

When evaluating a list of small companies, don’t just look at employee count. Pay attention to signals that indicate near‑term buying intent:

• Recent funding — A seed or Series A round gives a startup budget to spend on tools. < 80 words
• New job postings — If they’re hiring a head of sales or customer success, they’re scaling. < 80 words
• Website or product updates — A newly published case study or a blog post about SOC2 compliance suggests maturity. < 80 words
• Partnership announcements — Startups that announce a pilot with an enterprise often need supporting software quickly. < 80 words

Integrating these signals into your prospecting ensures you’re not just collecting names — you’re building a pipeline of accounts that are likely to buy. Origami’s live web crawl can pick up such signals automatically, whereas a static database can’t react to a press release that dropped yesterday.

Go from searching to selling in one platform

Prospecting climate tech software companies under 20 employees used to mean cobbling together LinkedIn, Crunchbase, Hunter.io, and a spreadsheet—and still ending up with outdated contacts. Now you can simply describe the startup you want to sell to, get a verified contact list in minutes, and launch outreach from the same tool. Whether you stick with the free tier or upgrade as you scale, Origami removes the grunt work so your team can focus on what matters: building relationships with the next wave of climate innovators.