Tools messaging developers actually keep open
A short, opinionated list — webhook debuggers, signing utilities, token decoders, and the platform-specific helpers we reach for during real integrations.
Built by UnifyPort
We're building our own batch of these — tuned to the exact pain points we keep hitting on real messaging integrations. Tell us what you'd want first and we'll prioritise it.
Tell us what to build first →Webhook debugging
Capture a payload, inspect headers, replay it — the bread-and-butter of any messaging integration.
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webhook.site
Guide FreemiumFive seconds to a throwaway URL with full headers and body. The fastest way to confirm a provider is actually firing.
webhook.site Read our notes → -
Pipedream RequestBin
Guide FreemiumOld-school bin with replay. Better when you need to watch traffic accumulate over hours, not seconds.
pipedream.com Read our notes → -
smee.io
Guide Open sourceGitHub-maintained proxy that forwards public webhooks to localhost. No tunnel software required.
smee.io Read our notes → -
ngrok
Guide FreemiumThe de-facto local tunnel. Built-in request inspector at 127.0.0.1:4040 is what we open most often during development.
ngrok.com Read our notes →
HMAC & request signing
Generate or verify the signatures providers stamp on their webhooks.
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CyberChef
Guide Open sourceGCHQ-open-sourced swiss-army knife. HMAC, base64, hex, URL decoding chained in one recipe.
gchq.github.io Read our notes → -
DevToys
Guide Open sourceOffline desktop app for macOS and Windows. Use this when you would rather not paste a signing secret into a web form.
devtoys.app Read our notes →
Tokens & JWT
Decode the credential, confirm the claims, sanity-check the expiry.
Telegram
Bot API helpers worth keeping handy. UnifyPort itself runs on user-mode MTProto rather than the Bot API, but most teams operate both side-by-side — the utilities below earn their keep on the Bot API half.
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@BotFather
OfficialTelegram's own bot for creating bots, rotating tokens, setting command menus, and toggling inline mode.
t.me Open → -
@userinfobot
FreeForward any message and it tells you the chat_id, user_id, and language code. Saves a round-trip to the Bot API.
t.me Open → -
@RawDataBot
FreeReturns the full Telegram update JSON. Indispensable when you are debugging inline queries or callback_query payloads.
t.me Open →
Phone numbers
E.164 normalization and validation, courtesy of the libraries everyone else already uses.
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libphonenumber demo
OfficialGoogle's own hosted demo of libphonenumber. If a number parses here, your backend will agree.
libphonenumber.appspot.com Open → -
libphonenumber-js demo
Open sourceJavaScript port with a visual playground. Use when you need to confirm browser-side behavior matches the Java reference.
catamphetamine.gitlab.io Open →
General API toolkit
Adjacent utilities every integrator hits sooner or later.
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httpbin.org
Open sourceEcho server for HTTP. The quickest way to verify your client is actually sending the headers and body you think it is.
httpbin.org Open → -
crontab.guru
FreeTranslates cron expressions into English and shows the next firing time. Stop guessing whether you wrote */15 right.
crontab.guru Open → -
regex101
FreeLive regex tester with engine explanations and performance hints. Worth the bookmark for the explanation pane alone.
regex101.com Open → -
Hoppscotch
Open sourceBrowser-based, no-signup Postman alternative. Convenient when you are on a borrowed machine or need to share a request quickly.
hoppscotch.io Open →
Missing a tool you swear by?
We update this list as our own team and customers find new ones worth keeping. Send us a tip on Telegram.