What is Pencil Project?
A freely available desktop tool for creating wireframes and mockups with built-in templates for web, mobile, and desktop user interfaces. Includes diagram drawing, interactive prototyping, and multi-format export capabilities.
Pencil Project pricing
We don't have Pencil Project's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Free and open-source
What Pencil Project does
The capabilities that matter for wireframing, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Architecture model
- Desktop local application
- Enforced low fidelity sketch rendering aesthetic
- -
- Pre built ios android web UI component library
- ✓
- AI generation from text prompts or napkin sketches
- -
- Drag and drop click through user flow linking
- ✓
- Real time multiplayer crdt cursor sync
- -
- Confluence and jira native iframe embedding
- -
- Export to high fidelity tools figma sketch
- -
- Click heatmap and basic usability testing integration
- -
- Offline editing mode
- ✓
- SOC2 type ii
- -
- ISO 27001
- -
- Pricing model
- -
Platform & deployment
Independently observed- macOS
- Linux
Integrations (1)
Independently observed- OpenClipart.org←•
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Pencil Project FAQ
Common questions about Pencil Project, answered from independent, dated evidence.
What is Pencil Project?
A freely available desktop tool for creating wireframes and mockups with built-in templates for web, mobile, and desktop user interfaces. Includes diagram drawing, interactive prototyping, and multi-format export capabilities. It is indexed under Wireframing.
Source: https://pencil.evolus.vn
Is Pencil Project free to use?
Pencil Project is open source, so it can be self-hosted and used at no licence cost. It is released under the GPL-2.0 licence. Pricing changes often, so verify at source before relying on it.
Source: https://pencil.evolus.vn
What platforms does Pencil Project support?
Pencil Project supports Windows, macOS and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://pencil.evolus.vn
Is Pencil Project open source?
Yes. Pencil Project is published under the GPL-2.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Source: https://github.com/evolus/pencil
Pencil Project alternatives
Other wireframing we track, ranked by the same independent score.
- MockFlowCollaborative visual workspace for brainstorming, design, and prototypingmedium · 74%
- Wireframe.ccBrowser-based tool for sketching website and application layouts with clickable prototypeslow · 39%
- NinjamockOnline collaborative wireframe and mockup design tool for rapid prototypingmedium · 54%
- JustinmindA collaborative tool for designing interactive prototypes and wireframes for web and mobile applicationsmedium · 58%
- Fluid UIBrowser-based tool for rapidly creating and testing interactive prototypes of web and mobile appsmedium · 56%
- MockplusAn all-in-one design and prototyping platform where teams create interactive mockups and collaborate in real-time before handing off to developersmedium · 51%
Compare Pencil Project
Side by side against other wireframing, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Pencil Project, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 58 | 0.07 | 4.1 | ✓ |
| Release cadence | 77 | 0.05 | 4.0 | ✓ |
| Stars | 75 | 0.03 | 2.0 | ✓ |
| Security score | 22 | 0.04 | 0.9 | ✓ |
| Integrations | 9 | 0.08 | 0.7 | ✓ |
| Dependent projects | 0 | 0.06 | 0.0 | ✓ |
| Development activity | 0 | 0.09 | 0.0 | ✓ |
| Security posture | 0 | 0.06 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 0 | mediumsource · 2026-10-12 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 4 items | mediumsource · 2026-09-10 · 69% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Architecture model: desktop_local_application · Offline editing mode: Yes · Drag and drop click through user flow linking: Yes · Pre built ios android web ui component library: Yes | mediumsource · 2026-10-12 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 1 | mediumsource · 2026-08-31 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-10-12 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | GPL-2.0 | highsource · 2026-10-12 · 95% |
Pricing
Release
Security
Is Pencil Project the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Pencil Project against the rest of the wireframing we index, using the same dated evidence weighted your way.
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