MockFlow vs Pencil Project

MockFlow is a visual brainstorming workspace for diagrams, mind maps, flowcharts, moodboards, storyboards, wireframing, and lite prototyping. WireframePro, its wireframing and lite prototyping tool, is included on every plan. The product is available through web, desktop, and browser extension, with listed platforms including macOS and Windows. Integrations include Slack, Microsoft Teams, Office 365, Jira, Confluence, Trello, Google Drive, Google Docs, and MCP. Mida AI uses a monthly credit pool, and Bridge can run compatible AI agents on the user's machine. Plus adds team chat, audio comments and meetings, role-based sharing, collaborative components, and multiplayer board editing. Max lists connectors to more than 20 business apps, Figma export, Build mode, SSO, SAML, SCIM, and an offline desktop app. Basic is restricted to personal and nonprofit work; commercial or business work requires a paid plan. Basic costs nothing and includes four projects, one editor, five reviewers, 500 components, and 100 AI credits per month. MockFlow says data is continuously backed up and sensitive information is encrypted with a 256-bit key.

Pencil Project is a free, open-source desktop tool for creating GUI mockups, wireframes, and diagrams. Built-in stencil collections cover desktop, web, Android, and iOS interfaces; connectors and flowchart shapes support diagramming. Elements can link to pages in the same document, and those links become hyperlinks in web exports. Drawings can be exported as PNG files, web pages, OpenOffice or LibreOffice text documents, Inkscape SVG, or Adobe PDF. A clipart browser connected to OpenClipart.org lets users add vector clipart by dragging it into a project. Stencil collections and export templates can be installed as add-ons. Pencil runs on Linux, macOS, and Windows, with downloads for Fedora and Ubuntu, other GNU/Linux distributions, Windows, and macOS. The macOS DMG supports Intel and Apple Silicon. Pencil is published under GNU General Public License version 2; Evolus also describes a commercial source-code license. The site identifies version 3.1.1 as the latest stable release and warns that nightly development builds are unstable. It provides a SHA-1 checksum link for download verification and invites donations to support development.