Laying out the streets…STEP 1 OF 3

Castov · Office #39,895

Unified, zero-server developer ecosystem for speed & privacy

In the Quick developer utilities neighborhood (Developer). In town since 14 Oct 2026.

Nobody has claimed this office yet. Tablif records every new product and gives it an office; when its owner claims it, the lights go on.

Is this yours? Claim it

What Tablif read on Castov's site

Castov describes itself as: “Castov | Free Developer Tools: Timestamps, Time Zones, JSON & More”

What it is

Calls itself “runtime”.

  • Calls itself: runtime
“Castov is a lightweight, browser-native runtime designed for decentralized compute and low-latency web architecture.”

What it costs

A free tier, free forever. No monthly or yearly plan. No one-time option.

  • One-time: no
  • Monthly: no
  • Yearly: no
  • Free plan: free forever
“Is Castov really free? Yes. All tools are free, with no account and no usage limits.”
“All tools are free, with no account and no usage limits.”

Who it sells to

Sells to developers. Made for analysts, developers and support teams.

  • Sells to: developers
  • Made for: analysts · developers · support teams
“Free Developer Tools: Timestamps, Time Zones, JSON & More”
“Developers, analysts and support teams constantly meet times written as long numbers or unfamiliar strings.”

How it runs

A command-line tool, browser extension and web app. Runs locally and works offline. Distributed through the npm. AI is a side feature.

  • Kind: cli · extension · web
  • Runs where: on the device, offline
  • Distributed via: npm
  • AI role: a side feature
“Execute zero-server developer utilities directly in terminal ( npx castov ) or import into TypeScript applications with castov-sdk .”
“Highlight text in your editor to instantly decode Base64, parse JWTs, inspect timestamps, or generate UUIDs.”

What it works with

Built on Next.js and TypeScript. Plugin for VS Code.

  • Built on: Next.js · TypeScript
  • Plugin for: VS Code
“Castov is a lightweight, browser-native runtime designed for decentralized compute”
“Built with Next.js & TypeScript”

What it offers as proof

Live, no waitlist. Try it without signing up. Publishes docs.

  • Trial asks for: nothing
“All tools are free, with no account and no usage limits.”
“Guides → -> https://www.castov.com/guides”

Sources

Tablif read these pages, last on 14 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

Similar products in Tablif Town

Explore Tablif Town