# Eraser vs PromptLocker

Eraser records 534,396 monthly visits with -23.6% month-over-month growth and Freemium, Paid, Contact for Pricing pricing. PromptLocker records 0 monthly visits with 0% growth and Early access / contact for pricing pricing.

| Metric | [Eraser](https://openaitools.app/tool/eraser) | [PromptLocker](https://openaitools.app/tool/promptlocker) |
| :--- | :--- | :--- |
| Website URL | https://www.eraser.io | https://www.promptlocker.ai |
| Categories | AI Diagram Generator, AI Copilot, AI Design Generator, AI Documents Generator | Prompt Engineering, AI Productivity Tools, AI Knowledge Management |
| Pricing Model | Freemium, Paid, Contact for Pricing | Early access / contact for pricing |
| Monthly Visits | 534,396 | 0 |
| MoM Growth Rate | -23.6% | 0% |
| Primary Market | India | Global |
| Direct Visits | 267,661 | 0 |
| Review Score | 4.6 | 4.2 |
| Saved Count | 3 | 5 |
| Supported Platforms | Website | Website |

## Eraser

Eraser is a technical design platform aimed at the people who document architecture: enterprise architects, DevOps and platform engineers, consultants, and software teams. The core promise is speed without sloppiness, so instead of dragging boxes for hours you describe the system or point Eraser at a source of truth such as code, a cloud account, a CMDB, or a spreadsheet, and it produces a diagram that already follows sensible layout rules.

Beyond static images, Eraser supports interactive maps that zoom from a company-wide view down into a single service, guided explainers that walk teammates through a system, and AI documents for design docs and technical documentation. Team governance features such as shared style presets, naming rules, and reference architectures keep output consistent as more people create diagrams. An open-source agent toolkit and MCP server let tools like Claude, Cursor, and ChatGPT create, search, and export diagrams programmatically.

Prices are organized in tiers that include a free entry point, paid plans, and enterprise agreements, with multi-tenant, single-tenant, and self-hosted deployment options for larger organizations. Security posture includes SOC 2 Type 2 certification and SAML SSO.

**Pricing & Plans:** Freemium with paid plans and custom enterprise pricing. A free tier and free tools such as DiagramGPT are available, while paid individual and team plans plus enterprise agreements cover advanced governance, security, and deployment options; check the pricing page for current rates.

- **AI diagram generation:** Generate architecture diagrams, flowcharts, sequence diagrams, and BPMN from a text prompt, code, Terraform, or an uploaded PDF, Word, Excel, PowerPoint, Draw.io, or Visio file.
- **Maps from live systems:** Build interactive maps that sync with cloud accounts, repositories, and internal catalogs so the picture stays close to the real environment, with drill-down from org level to a single container.
- **Diagram-as-code integrations:** Paste code or connect private and public Git repositories, Confluence, Notion, VS Code, and GitHub to keep diagrams grounded in actual implementation.
- **Open-source agent toolkit and MCP server:** Run the agent toolkit in your own infrastructure under an MIT license and let MCP-compatible clients create, search, update, and export diagrams with OAuth or API tokens.
- **Team style governance:** Apply presets, naming and notation rules, and reference architectures so every teammate's diagram ships on-brand and consistent.

**Strengths:** Turns prompts, code, and files into properly laid-out diagrams instead of raw box-and-arrow output; Interactive maps and explainers make complex systems understandable to non-architects; MCP server and open-source toolkit fit agent-driven and self-hosted workflows; Enterprise controls such as SSO, SAML, and SOC 2 Type 2 certification

**Limitations:** Heaviest value comes with team and governance features that need setup; Advanced mapping and self-hosted deployment are aimed at larger organizations rather than solo users

[Profile (Markdown)](https://openaitools.app/tool/eraser.md)

## PromptLocker

PromptLocker targets a problem that regulated practices already have: staff quietly pasting client files, tax records or patient information into consumer AI tools. Instead of trying to ban those tools, PromptLocker provides a sanctioned alternative. The governance layer is deployed inside the firm's existing cloud account, so prompts, documents and model responses are processed within the firm's own environment and under its own access controls rather than on a shared multi-tenant backend.

On top of that runtime, PromptLocker adds an append-only audit log. Every query, model call, document access and returned response is timestamped, attributed to a user and linked to a matter, which makes it possible to pull a compliance report for any date range without reconstructing history by hand. A leader portal gives owners and managing partners a firm-wide view of AI activity, and the audit trail stays in the customer's account rather than with the vendor.

The compliance side is deliberately vertical-specific: onboarding is designed to produce the documentation a given practice actually needs, such as WISP addenda, business associate agreements, ABA Opinion 512 summaries or Reg S-P governance policies. The platform is positioned as an early-access offering for regulated professional firms rather than a general-purpose developer framework, and it does not publish list pricing — access is arranged through a direct conversation about the firm's AI exposure.

**Pricing & Plans:** PromptLocker does not publish list pricing. The site describes an early-access program in which interested firms request access and have a direct conversation about their current AI exposure and the governance work required. Treat any pricing as custom and confirmed during that conversation.

- **Runs inside your own cloud account:** The governance layer deploys in the firm's existing cloud account, so client files, patient records and financial data are processed within the firm's own environment and access controls.
- **Append-only audit log:** Every query, model call, document access and response is timestamped, user-attributed and matter-linked, making firm-wide AI activity reconstructable and reportable.
- **Compliance documentation at onboarding:** Onboarding is built to deliver the artefacts a specific regulated vertical needs, such as WISP addenda, BAAs, ABA Opinion 512 summaries and Reg S-P governance policies.
- **Leader portal:** Owners and managing partners get a web dashboard showing every AI interaction across the firm, with full session logs exportable for any date range.
- **Sanctioned alternative to shadow AI:** Rather than banning consumer AI tools, PromptLocker gives staff a governed tool that works with the right documents already in place.

**Strengths:** Deploys in the customer's own cloud account, so client data does not leave the firm's network; Purpose-built for regulated verticals rather than a generic LLM tool; Immutable, matter-linked audit log supports compliance reporting on demand; Onboarding oriented around concrete compliance artefacts instead of roadmap promises

**Limitations:** No published pricing; you must request access and negotiate; Early-access stage, so features and terms may still change; Focused on regulated professional services, which makes it a poor fit for casual or hobbyist users

[Profile (Markdown)](https://openaitools.app/tool/promptlocker.md)

## Frequently Asked Questions

### How do Eraser and PromptLocker compare in monthly traffic?

Eraser has 534,396 monthly visits, while PromptLocker has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Eraser has a month-over-month growth rate of -23.6%; PromptLocker has 0%.

### How does pricing compare?

Eraser: Freemium, Paid, Contact for Pricing. Freemium with paid plans and custom enterprise pricing. A free tier and free tools such as DiagramGPT are available, while paid individual and team plans plus enterprise agreements cover advanced governance, security, and deployment options; check the pricing page for current rates. PromptLocker: Early access / contact for pricing. PromptLocker does not publish list pricing. The site describes an early-access program in which interested firms request access and have a direct conversation about their current AI exposure and the governance work required. Treat any pricing as custom and confirmed during that conversation.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Miro](https://openaitools.app/tool/miro) | 30,749,206 | +1.7% | Freemium, Contact for Pricing | Offers an expansive infinite canvas for team brainstorming and visual workshops, but lacks Eraser's code-to-diagram automation. | [.md](https://openaitools.app/tool/miro.md) |
| 2 | [Napkin AI](https://openaitools.app/tool/napkin) | 1,029,978 | -17.5% | Freemium | Automatically embeds visual diagrams directly inside text documents, though it lacks Eraser's specialized cloud architecture focus. | [.md](https://openaitools.app/tool/napkin.md) |
| 3 | [PrompTessor](https://openaitools.app/tool/promptessor) | 321,329 | +84.2% | Freemium | Analyze, optimize and organize prompts in one AI workspace | [.md](https://openaitools.app/tool/promptessor.md) |
| 4 | [EdrawMax](https://openaitools.app/tool/edrawmax-com) | 301,707 | -6.5% | Paid | Provides extensive drag-and-drop shapes and templates for general diagrams, but weaker automated code-to-diagram capabilities than Eraser. | [.md](https://openaitools.app/tool/edrawmax-com.md) |
| 5 | [Cloudairy](https://openaitools.app/tool/cloudairy) | 179,162 | -13% | Freemium, Contact for Pricing | Combines team whiteboarding, documentation, and diagramming in one platform, but less tailored for automated codebase architecture. | [.md](https://openaitools.app/tool/cloudairy.md) |
| 6 | [Prompt Builder](https://openaitools.app/tool/prompt-builder) | 113,122 | +22.2% | Freemium | Turn rough ideas into model-ready prompts in seconds | [.md](https://openaitools.app/tool/prompt-builder.md) |
| 7 | [PromptLayer](https://openaitools.app/tool/promptlayer) | 85,899 | -4.6% | Free Trial, Contact for Pricing | The collaboration layer for AI engineering teams | [.md](https://openaitools.app/tool/promptlayer.md) |
| 8 | [ChartDB](https://openaitools.app/tool/chartdb) | 49,523 | -33.4% | Freemium | Open-source tool specifically tailored for database schema visualization and ER diagrams, but lacks general system documentation features. | [.md](https://openaitools.app/tool/chartdb.md) |
| 9 | [Mermaid Chart](https://openaitools.app/tool/mermaid-chart) | 46,022 | +519% | Freemium, Free Trial | Stronger focus on standard Mermaid syntax and code-driven diagrams, but lacks Eraser's native autonomous architecture doc generation. | [.md](https://openaitools.app/tool/mermaid-chart.md) |
| 10 | [Omnifact](https://openaitools.app/tool/omnifact) | 39,650 | 0% | Freemium, Contact for Pricing | GDPR-compliant generative AI for regulated organizations | [.md](https://openaitools.app/tool/omnifact.md) |

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Source: https://openaitools.app/compare/eraser-vs-promptlocker

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