Two datasets, one question: where is the software problem solved but the distribution problem wide open? 1665 open-source projects crossed against 1077 startup directories.
Cross-referencing 1665 open-source projects across 130 categories against 1077 startup launch directories produces 25 categories where free software already dominates the product surface while almost nobody runs distribution there. 8 of them have zero category-specific directories at all. That mismatch is the opening: the product is commoditised, so the winner is whoever owns the channel, not whoever ships the feature.
| # | Category | Verdict | Free implementations | Maintained | Directories covering it |
|---|---|---|---|---|---|
| 1 | Communication |
Crowded · 77/100
|
177 | 100 | 0 |
| 2 | Document Management |
Crowded · 72/100
|
41 | 22 | 0 |
| 3 | Photo Galleries |
Contested · 61/100
|
25 | 15 | 0 |
| 4 | Wikis |
Contested · 50/100
|
26 | 12 | 0 |
| 5 | Blogging Platforms |
Contested · 48/100
|
15 | 4 | 0 |
| 6 | Booking and Scheduling |
Contested · 47/100
|
8 | 7 | 0 |
| 7 | Pastebins |
Contested · 44/100
|
21 | 9 | 0 |
| 8 | Recipe Management |
Contested · 44/100
|
11 | 5 | 0 |
| 9 | Money, Budgeting & Management |
Crowded · 72/100
|
42 | 27 | 1 |
| 10 | Note-taking & Editors |
Contested · 49/100
|
20 | 14 | 1 |
| 11 | Calendar & Contacts |
Contested · 40/100
|
8 | 7 | 1 |
| 12 | Games |
Crowded · 67/100
|
40 | 20 | 2 |
| 13 | Web Servers |
Contested · 52/100
|
19 | 14 | 2 |
| 14 | E-commerce |
Contested · 49/100
|
28 | 17 | 3 |
| 15 | Knowledge Management Tools |
Contested · 41/100
|
8 | 3 | 3 |
| 16 | Personal Dashboards |
Contested · 44/100
|
18 | 10 | 4 |
| 17 | Video Surveillance |
Contested · 39/100
|
8 | 5 | 4 |
| 18 | Automation |
Crowded · 64/100
|
34 | 15 | 5 |
| 19 | Analytics |
Crowded · 63/100
|
38 | 18 | 7 |
| 20 | Polls and Events |
Contested · 46/100
|
19 | 8 | 7 |
| 21 | Content Management Systems (CMS) |
Crowded · 75/100
|
44 | 29 | 8 |
| 22 | Software Development |
Crowded · 80/100
|
100 | 58 | 11 |
| 23 | Internet of Things (IoT) |
Contested · 52/100
|
20 | 10 | 11 |
| 24 | Task Management & To-do Lists |
Contested · 50/100
|
24 | 9 | 11 |
| 25 | Maps and Global Positioning System (GPS) |
Contested · 42/100
|
18 | 13 | 11 |
Coverage counts directories in the Launch Ledger whose focus overlaps the category. Zero means founders in that niche have no dedicated place to be found.
177 open-source implementations, 100 still shipping code, led by Mastodon. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. Feature parity is worthless here — the wedge is hosting, compliance or a channel nobody owns.
41 open-source implementations, 22 still shipping code, led by Stirling-PDF. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. Feature parity is worthless here — the wedge is hosting, compliance or a channel nobody owns.
25 open-source implementations, 15 still shipping code, led by Immich. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. The category is still contested, so an early distribution advantage can decide it.
26 open-source implementations, 12 still shipping code, led by Outline. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. The category is still contested, so an early distribution advantage can decide it.
15 open-source implementations, 4 still shipping code, led by Ghost. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. The category is still contested, so an early distribution advantage can decide it.
8 open-source implementations, 7 still shipping code, led by Cal.diy. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. The category is still contested, so an early distribution advantage can decide it.
21 open-source implementations, 9 still shipping code, led by PrivateBin. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. The category is still contested, so an early distribution advantage can decide it.
11 open-source implementations, 5 still shipping code, led by Mealie. Distribution side: no directories in the Launch Ledger target this niche, so the only way buyers find a product here is search and word of mouth. The category is still contested, so an early distribution advantage can decide it.
42 open-source implementations, 27 still shipping code, led by HyperSwitch. Distribution side: 1 directories in the Launch Ledger target this niche, the strongest being Smart Money Match (DR 32). Feature parity is worthless here — the wedge is hosting, compliance or a channel nobody owns.
20 open-source implementations, 14 still shipping code, led by Memos. Distribution side: 1 directories in the Launch Ledger target this niche, the strongest being Noteableai (DR 28). The category is still contested, so an early distribution advantage can decide it.
A category has a launch marketing gap when open-source implementations are abundant and maintained, but the distribution surface — directories, review sites, niche communities where buyers actually look — barely covers it. We measure the first side with the saturation index over 1665 projects, and the second by matching each category against 1077 launch directories. Low coverage plus high saturation means the code is solved and the channel is empty.
Because it sets your price ceiling. When a maintained free alternative exists, every prospect can find it in five minutes, and your pricing has to be justified by something the free version structurally cannot deliver: hosting, compliance, support SLAs, integrations or onboarding. Saturation does not mean 'do not build' — it means 'do not compete on features'.
Two ways. If you are building, pick a row where saturation is high but coverage is near zero, and win on distribution — be the first result in every directory, comparison page and community thread in that niche. If you are marketing an existing product, treat the coverage column as a to-do list of untouched channels.
Repository health metrics and directory metadata were both refreshed August 2026. Saturation scores combine implementation count, maintenance rate, leader dominance and death rate; directory coverage is a keyword overlap between the category and each directory's name, focus and description.
IdeaProof tells you whether it is already built, how saturated the category is, and where to launch it — in about two minutes.
Search this database by category and by the commercial product you would replace. It covers 1665 projects across 130 categories, each mapped to the paid tool it substitutes. If your category shows a "Crowded" verdict, a maintained free version almost certainly exists and your positioning has to account for it.
No. It means free is your price anchor. Plenty of large companies were built next to a good open-source project — the ones that failed were the ones selling the same job at a price the free tool made indefensible. Find the part of the job the project deliberately does not do, and sell that.
Each category gets a 0–100 score built from three inputs: how many implementations exist, what share of them are still actively maintained, and how far ahead the leading project is compared with the category median. 62+ is Crowded, 38–61 Contested, under 38 Open. 11 categories are Crowded and 88 are Open.