
Axure
Balsamiq
Invision
Zeplin
Moqups
Proto.io
ProtoPie
Flinto
BundleUp
Nango
BundleUp gives developers a single, unified API to build and manage integrations across services like Slack, GitHub, Salesforce, and more. Call any third-party API through one edge endpoint with built-in OAuth, token refresh, retries, and rate limits, so you can skip standing up integration servers. Use its normalized interface to access common resources across providers without per-provider rewrites, and connect agents to existing MCP servers with managed OAuth.
Axure
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Balsamiq - Balsamiq. Rapid, effective and fun wireframing software.
Nango - The fastest way to ship integrations with 500+ APIs
Invision - Prototyping and collaboration for design teams
Zeplin - Collaboration app for UI designers & frontend developers
Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project
Proto.io - Create fully-interactive high-fidelity prototypes in minutes that look and work exactly like your app should. Sign up for a free 15-day trial and get started.