Integrations Overview
FlowStack connects to over 1,000 apps and services out of the box, with support for custom HTTP requests to any API.
Integration Count by Engine
| Engine | Integrations | Highlights |
|---|---|---|
| Flow Builder | 687+ pieces | Deep OAuth support, pre-built triggers and actions |
| Workflow Builder | 880+ node types | 606 unique services, 130+ AI/LangChain nodes |
| Combined | 1,000+ unique services | Deduplicated across both engines |
Categories
| Category | Example Integrations |
|---|---|
| CRM | Salesforce, HubSpot, Pipedrive, Zoho CRM, Close |
| Gmail, Outlook, SendGrid, Mailchimp, Mailgun | |
| Messaging | Slack, Discord, Microsoft Teams, Telegram, WhatsApp |
| Spreadsheets | Google Sheets, Airtable, Excel, Smartsheet |
| Project Management | Notion, Asana, Jira, Trello, Linear, Monday.com |
| Dev Tools | GitHub, GitLab, Bitbucket, CircleCI, Jenkins |
| Payments | Stripe, PayPal, Square, Braintree, Paddle |
| Storage | Google Drive, Dropbox, OneDrive, S3, Box |
| Databases | PostgreSQL, MySQL, MongoDB, Supabase, Firebase |
| Marketing | Meta Ads, Google Ads, LinkedIn Ads, Mailchimp, ActiveCampaign |
| AI & ML | OpenAI, Anthropic, Google AI, Hugging Face, Pinecone |
| Communication | Twilio, Vonage, Intercom, Zendesk, Freshdesk |
Connection Methods
FlowStack supports three authentication methods:
OAuth 2.0
One-click authorization via popup window. FlowStack handles token refresh automatically.
- Supported by: Google, Slack, GitHub, Salesforce, HubSpot, and 200+ more
API Key
Paste your API key from the service's developer settings.
- Supported by: OpenAI, SendGrid, Stripe, Twilio, and 500+ more
Basic Auth
Username and password authentication.
- Supported by: IMAP email servers, legacy APIs, self-hosted services
Browsing Integrations
- Go to Dashboard → Connections
- Click + New Connection
- Browse by category or search by name
- Click an integration to set up the connection
- Complete the auth flow
- The connection is saved and available across all your automations
Custom Integrations
For services without a pre-built integration:
- HTTP Request — Call any REST API with custom method, URL, headers, body, and auth
- Webhook — Receive events from any service that supports webhooks
- Code Node — Write custom JavaScript/Python to interact with any API (Workflow Builder)
See Custom HTTP Requests for detailed instructions.