Best Preview Environment Software in 2026
Updated
In short: Railway is ranked #1 of 36 as of 5 October 2026, ahead of sh0 and Encore. The best-ranked option with a free plan is sh0. The lowest first paid tier on this page is Skyhook at $1/mo.
A preview environment can give a team a place to review proposed changes before they move further through development. Compare pull request previews and preview lifecycle controls, including expiry, then consider database previews where applications rely on data. Git provider support and custom domains offer additional workflow details. Free-plan availability and paid-from pricing help with cost comparisons. Railway, sh0, and Encore are among the options shown. The listed capabilities can help you focus on the review process, integrations, and lifecycle controls that matter to your team.
36 preview environment software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
23 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | RailwayWeb · Windows · Mac · Linux · Android · iPhone · API | Three bars | — | 6 of 6 | $5/mo | 6.8 | |
| 2 | sh0Web · Mac · Linux · Android · iPhone · Self-hosted · API | Three bars | — | 5 of 6 | $19/mo | 6.7 | |
| 3 | EncoreWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | $49/mo | 6.6 | |
| 4 | NorthflankWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 6.6 | |
| 5 | NullstoneWeb · Windows · Mac · Linux · API | Three bars | — | 4 of 6 | $50/mo | 6.6 | |
| 6 | OktetoWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 6.6 | |
| 7 | SkyhookWeb · Windows · Mac · Linux · API | Three bars | — | 4 of 6 | $1/mo | 6.6 | |
| 8 | TempsWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | $29/mo | 6.6 | |
| 9 | Upsun (formerly Platform.sh)Web · Windows · Mac · Linux · API | Three bars | — | 4 of 6 | €9/mo | 6.6 | |
| 10 | ZeaburWeb · Windows · Mac · Linux · API · Extension | Three bars | — | 4 of 6 | $5/mo | 6.6 | |
| 11 | Firebase Cloud MessagingWeb · Android · iPhone · API · Extension | Three bars | — | 3 of 6 | Free | 6.5 | |
| 12 | MirenWeb · Mac · Linux · Self-hosted | Three bars | — | 3 of 6 | $29/mo | 6.5 | |
| 13 | SignadotWeb · Mac · Linux · Self-hosted · API | Three bars | — | 3 of 6 | $250/mo | 6.5 | |
| 14 | Cloudflare PagesWeb · API | Two bars | — | 1 of 6 | $20/mo | 6.4 | |
| 15 | CoolifyWeb · Linux · Self-hosted · API | Two bars | — | 2 of 6 | $5/mo | 6.4 | |
| 16 | EaselWeb · API | Two bars | — | 1 of 6 | $20/mo | 6.4 | |
| 17 | GitLab Package RegistryWeb · Linux · Self-hosted · API | Two bars | — | 2 of 6 | $2.42/mo | 6.4 | |
| 18 | KovraWeb · API | Two bars | — | 1 of 6 | $50/mo | 6.4 | |
| 19 | NetlifyWeb · API | Two bars | — | 1 of 6 | $9/mo | 6.4 | |
| 20 | SlipwayWeb · Self-hosted · API | Two bars | — | 1 of 6 | $5/mo | 6.4 | |
| 21 | VercelWeb · API | Two bars | — | 1 of 6 | $20/mo | 6.4 | |
| 22 | HostlessWeb | Two bars | — | 1 of 6 | $15/mo | 6.3 | |
| 23 | PortWeb · API · Extension | Two bars | — | 1 of 6 | $30/mo | 6.3 | |
| 24 | PreevyWindows · Mac · Linux · Self-hosted | Two bars | — | — | 3 of 6 | — | 5.5 |
| 25 | PullPreviewWeb · Self-hosted · API | One bar | — | — | 1 of 6 | €25/mo | 5.4 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Pull request previews | Preview lifecycle |
|---|---|---|---|---|---|---|---|---|
| 1 | Railway | 6.8 | No | $5/mo | Yes | 5 /mo | — | — |
| 2 | sh0 | 6.7 | Free plan | $19/mo | Yes | 19 /mo | Yes | both |
| 3 | Encore | 6.6 | Free plan | $49/mo | Yes | 49 /mo | — | — |
| 4 | Northflank | 6.6 | Free plan | Free | Yes | 0 /mo | — | — |
| 5 | Nullstone | 6.6 | Free plan | $50/mo | Yes | — | — | — |
| 6 | Okteto | 6.6 | Free plan | Free | No | — | — | — |
| 7 | Skyhook | 6.6 | Free plan | $1/mo | Yes | — | — | — |
| 8 | Temps | 6.6 | Free plan | $29/mo | Yes | 29 /mo | Yes | both |
| 9 | Upsun (formerly Platform.sh) | 6.6 | No | €9/mo | No | — | — | — |
| 10 | Zeabur | 6.6 | Free plan | $5/mo | Yes | 5 /mo | — | — |
| 11 | Firebase Cloud Messaging | 6.5 | Free plan | Free | Yes | — | — | — |
| 12 | Miren | 6.5 | Free plan | $29/mo | Yes | 29 /mo | Yes | both |
| 13 | Signadot | 6.5 | Free plan | $250/mo | Yes | 250 /mo | Yes | both |
| 14 | Cloudflare Pages | 6.4 | Free plan | $20/mo | Yes | — | — | — |
| 15 | Coolify | 6.4 | Free plan | $5/mo | Yes | 5 /mo | — | — |
| 16 | Easel | 6.4 | Free plan | $20/mo | Yes | 20 /mo | Yes | both |
| 17 | GitLab Package Registry | 6.4 | Free plan | $2.42/mo | Yes | — | — | — |
| 18 | Kovra | 6.4 | Free plan | $50/mo | Yes | 50 /mo | Yes | — |
| 19 | Netlify | 6.4 | Free plan | $9/mo | Yes | 9 /mo | — | — |
| 20 | Slipway | 6.4 | Free plan | $5/mo | Yes | 5 /mo | Yes | automatic |
| 21 | Vercel | 6.4 | Free plan | $20/mo | Yes | — | — | — |
| 22 | Hostless | 6.3 | Free plan | $15/mo | Yes | — | — | — |
| 23 | Port | 6.3 | Free plan | $30/mo | Yes | — | — | — |
| 24 | Preevy | 5.5 | No | — | — | — | Yes | both |
| 25 | PullPreview | 5.4 | No | €25/mo | Yes | — | Yes | both |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which preview environment software is ranked first on Freedom251?
Railway is ranked #1 of 36 with a score of 6.8. sh0 is second and Encore third.
How many of these have a free plan?
21 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Skyhook has the lowest first paid tier we found: $1/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.