
Stellarium
Free open source desktop planetarium software, distinct from the paid Stellarium Mobile Plus app
- Windows
- macOS
- Linux
3 alternatives · 3 questions answered
The directory
632 products matching your filters. Each one described on the same fields, so two tools can be read against each other rather than against their own marketing.
Showing 529–552 of 632

Free open source desktop planetarium software, distinct from the paid Stellarium Mobile Plus app
3 alternatives · 3 questions answered

Create games with visual programming
4 alternatives · 4 questions answered

Fast and reliable image-based backup
4 alternatives · 2 questions answered

S3-compatible object storage distributed in encrypted pieces across independently operated nodes
3 alternatives · 4 questions answered

Open-source 3D game engine with editor
4 alternatives · 4 questions answered

A sophisticated text editor for code, markup and prose
4 alternatives · 3 questions answered

Node-based material authoring
4 alternatives · 1 limitation documented

3D texture painting software
4 alternatives · 1 question answered

Open source fork of SugarCRM with no per user licence fee, sold as hosting and support
3 alternatives · 4 questions answered

Secure your digital life
3 alternatives · 2 questions answered

Multi-model database combining documents, graphs, vectors and time-series
2 alternatives · 3 questions answered

Generates a software bill of materials from images, filesystems and archives
2 alternatives · 5 questions answered

Continuous file synchronisation between your own devices
3 questions answered · 4 limitations documented

Enterprise and on-premises machine translation, sold on per-user monthly plans and separate quoted API and installed-server products
2 alternatives · 3 questions answered

AI coding agents built for enterprise privacy and control
3 alternatives · 5 questions answered

Zero-trust mesh VPN built on WireGuard with identity-based access
4 alternatives · 3 questions answered

The most popular userscript manager
4 alternatives · 2 questions answered

Unified platform for real-time endpoint management, security and compliance
2 alternatives · 2 questions answered

Spreadsheet interface over real PostgreSQL tables, so the data stays queryable by anything that speaks SQL
3 alternatives · 5 questions answered

JetBrains continuous integration and delivery server
2 alternatives · 2 questions answered

Pure instant messaging — simple, fast, secure, and synced across all your devices
4 alternatives · 1 question answered

Certificate-based access to servers, Kubernetes, databases and apps, replacing shared credentials and VPNs
4 alternatives · 4 questions answered

Established core banking system used by banks in over a hundred countries
3 alternatives · 3 questions answered

Network vulnerability scanner
4 alternatives · 8 questions answered
Head to head
Pairings from this slice of the directory, each one checked by two reviewers who agreed a buyer would weigh the two against each other.
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How this works
Pricing, platforms and feature lists are taken from each vendor's own pages. Limitations, answered questions and alternatives are researched separately and carry a source URL on the page that states them. Every product is described on the same fields, so two tools can be read against each other rather than against their own marketing.
Because we did not collect any. Softwr hosts no reviews, and a rating aggregated from somewhere else is not ours to publish as though it were an assessment we made. What is shown instead is what a tool costs, where it runs, and what it is concretely bad at.
A researcher proposes them, then two independent reviewers judge one question each: would a buyer evaluating this product seriously consider that one instead. 225 of 1,841 candidates failed and were deleted, including a font inspector matched to a dark mode extension. Only pairings that survived both rounds are published.
Not to be listed. A vendor can buy a place in the results on the home page, on a category listing or on the catalogue, and where they do the result carries a Sponsored label. Everything not carrying that label is ordered on the same criteria as everything else, and a paid place never changes where an unpaid one lands: the editorial order flows around it. Where a link earns a commission that is disclosed on the page carrying it.
Prices and plan limits move without notice, so treat anything with a number on it as a starting point and check the vendor before you buy. Where a claim could go stale it carries the source it came from, which is the fastest way to tell.
Something missing here?
Anyone can submit a tool. A person reads every submission, checks the pricing against the vendor’s own page, and nothing is published until it passes.