Communications & messaging
684 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
304 APIs added in the last 30 days.
The biggest APIs
The APIs with the most operations.
Most active
Most new revisions in the last 90 days.
All APIs
684- PH333 operations479 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- UP102 operations11 revisionsuplika@uplika/uplika
Social media publishing: schedule posts, reply, manage inbox and automations across connected channels
- CA286 operations15 revisionsCall2Me API@call2me/call2me-api
Voice AI: place outbound phone calls, manage agents, numbers, knowledge bases and schedules
- @F44 operations30 revisions@fazer-ai/baileys-api@fazer-ai/fazer-ai-baileys-api
WhatsApp messaging: send messages, manage connections, groups and media via HTTP
- RE56 operations4 revisionsRevdoku API@revdoku/revdoku-api
Mailboxes for AI agents: send and read email, store private files, manage custom domains
- BI528 operations88 revisionsBird API@messagebird/bird-api
Email, SMS, WhatsApp and realtime messaging: send messages, manage contacts and templates, and track delivery stats
- TE14 operations5 revisionstextbee API@textbee/textbee-api
SMS: send texts and webhook events through your own Android phones
- TR320 operations64 revisionsTrytrata API@trytrata/trytrata-api
Voice rooms, call recordings, transcripts, notifications and admin tools for users, leads and earnings
- ST209 operations588 revisionsStream API@getstream/stream-api
Chat: channels, messages, members, moderation blocklists and campaigns
- TE1,547 operations339 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- TW47 operations153 revisionsTwilio - Numbers@twilio/twilio-numbers
Phone numbers: hosting, regulatory bundles, end users and short code applications
- TE1,547 operations122 revisionsTelnyx API@team-telnyx/telnyx-api
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and porting
- PR24 operations27 revisionsProsper Voice@getprosperapp/prosper-voice
Outbound calling: run campaigns, manage call targets, blacklists, call logs and live calls
- FO76 operations5 revisionsForward Email API@forwardemail/forward-email-api
Email: manage domains, aliases, forwarding, outbound SMTP sends, contacts, calendars and messages
- CO196 operations22 revisionsCooper Email API@cooperemail/cooper-email-api
Email: create inboxes, send and receive mail, search messages, and ask owners
- VO137 operations19 revisionsvolai REST API@volai/volai-rest-api
Phone numbers, calls and SMS, plus AI voice agents for placing and receiving calls
- WA144 operations4 revisionsWaAPI API@waapi/waapi-api-2
Messaging: send WhatsApp messages, media and vCards, manage groups, chats and contacts
- QU120 operations38 revisionsQubrics API@sendmux/sendmux-api
Email infrastructure: manage mailboxes, domains, sending accounts, sender filters, webhooks and delivery logs
- TW61 operations72 revisionsTwilio - Trusthub@twilio/trusthub-v1
Trust Hub compliance: register brands and campaigns, manage customer profiles, trust products and supporting documents
- SM5 operations200 revisionsSMS API@apideck-libraries/sms-api
SMS: send, list, update and delete text messages and their delivery status
- VO44 operations50 revisionsVoice Logica API@voicelogica/voice-logica-api
Voice AI: place outbound AI calls, run campaigns, query calls, SMS and SIP trunks
- PL221 operations4 revisionsPlatform API@ethora/platform-api
Chat, user, file and sharing APIs for embedding messaging into apps, with app and AI agent management
- DI86 operations7 revisionsDialNexa API@dialnexa/dialnexa-api
Voice AI: build agents, place calls, run batch campaigns, manage knowledge bases and phone numbers
- MA118 operations55 revisionsmailcow API@mailcow/mailcow-api
Email hosting: manage mailboxes, aliases, domains, DKIM keys, spam policies and mail queues
Showing 1 to 24 of 684
Load more