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Greenshot VS UnionStack.ca

Compare Greenshot VS UnionStack.ca and see what are their differences

Greenshot

Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
UnionStack.ca

Union management software that keeps people, structure, agreements, cases, communications, meetings and operations connected.

Rating
0 reviews
Pricing
Paid Free trial CA$99.99 / Monthly (Per User Subscription)
Alternatives Is it good?
HTMLCSS to Image API
Capture website screenshots, render HTML/CSS, or create templated graphics. Render images or PDFs. Use MCP with AI, no-code automation, or the REST API. No browsers needed. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Greenshot seems to be more popular. It has been mentioned 117 times since March 2021.

social mentions
117 vs 0
Screenshot Annotation popularity
100% vs 0%
alternatives listed
240+ vs 3

Base details

Website, pricing, platforms and company facts side by side.

Greenshot
UnionStack.ca
Website getgreenshot.org unionstack.ca
Pricing
Open source
Paid Free trial CA$99.99 / Monthly (Per User Subscription) Official pricing
Platforms —
Web
Company — Startup from Canada · 2026
Listed in
Screenshot Annotation Screenshots Image Annotation Screen Capture +1
Membership Management Contact Management Event Management CRM +1

About Greenshot and UnionStack.ca

In their own words, as submitted to SaaSHub.

Greenshot
UnionStack.ca

No description of Greenshot yet.

UnionStack is a web-based management platform for labour unions. It connects membership records, organizations, casework, communications, and member services in one system, helping staff keep information organized and coordinate their daily work. Unions can configure the platform around their own...

Read more about UnionStack.ca

Features and specs

What each product offers, as listed by its team.

Greenshot 5 features
UnionStack.ca 25 features
  • Open Source
    Greenshot is an open-source tool, meaning it is free to use and has a transparent development process. Users can view, modify, and distribute the source code.
  • Lightweight
    Greenshot has a small footprint and runs efficiently, making it suitable for use on older or less powerful systems without significantly impacting performance.
  • Customizable
    The tool offers various configuration options, allowing users to tailor the screenshot capture process and output to their specific needs.
  • Annotation Tool
    Greenshot includes built-in annotation tools, enabling users to edit, highlight, and add notes to their screenshots directly within the application.
  • Multiple Export Options
    Users can save screenshots in various formats or directly upload them to cloud services or share them via email, making it versatile for different use cases.

Possible disadvantages

  • Windows-Centric
    Greenshot primarily supports Windows. Users on macOS and Linux might find it less optimized or need to seek alternative solutions.
  • Learning Curve
    Although versatile, the extensive features and customization options might present a learning curve for new users, particularly those unfamiliar with screenshot tools.
  • Limited Advanced Editing
    While Greenshot offers annotation tools, it lacks advanced image editing capabilities found in more comprehensive graphic design software.
  • Occasional Bugs
    As with many open-source projects, users may encounter occasional bugs or stability issues, requiring community support or patience for fixes.
  • No Video Capture
    Greenshot is designed exclusively for capturing static screenshots and does not support video or GIF recording, unlike some of its competitors.
  • Member Directory
    Keep member records organized and searchable.
  • Custom Fields
    Capture information specific to your union.
  • Data Import
    Import records and review duplicates.
  • Organizational Structure
    Connect locals, employers, worksites, and committees.
  • Position Tracking
    Track member assignments and leadership terms.
  • Grievance Management
    Manage grievances from intake to resolution.
  • Case Workflows
    Configure stages, assignments, and responsibilities.
  • Deadline Tracking
    Track case deadlines and progress.
  • Collective Agreements
    Compare articles across agreement versions.
  • Email Integration
    Connect mailboxes and manage threaded conversations.
  • Bulk Messaging
    Send messages to selected member groups.
  • Meeting Management
    Organize agendas, minutes, decisions, and actions.
  • Event Registration
    Manage registrations, capacity, and waitlists.
  • Attendance Tracking
    Record event attendance and completion.
  • Member Portal
    Give members access to relevant personal records.
  • Union Websites
    Publish branded websites on custom domains.
  • Expense Claims
    Submit, review, and approve member expenses.
  • Dues Remittance
    Import employer dues files and reconcile payments.
  • Membership Analytics
    Analyze membership changes, tenure, and retention.
  • Case Analytics
    Monitor caseloads, trends, deadlines, and outcomes.
  • Staff Dashboard
    See assigned work and upcoming activity.
  • Document Management
    Store documents alongside related records.
  • Role-Based Permissions
    Control access by role and responsibility.
  • Audit History
    Track record changes and user actions.
  • API Access
    Connect UnionStack with other systems.

Analysis

An editorial look at what each product does well and who it suits.

Greenshot
UnionStack.ca

Overall verdict

  • Overall, Greenshot is a recommended screenshot tool due to its comprehensive features that cater to both basic and advanced screenshot needs while being resource-efficient.

Why this product is good

  • Greenshot is considered a good tool by many users due to its simplicity, ease of use, and powerful features that are highly beneficial for creating and editing screenshots. It offers various annotation tools, multiple output options, and integration with other services which enhance productivity and documentation processes.

Recommended for

  • Students who need to include annotated screenshots in their reports or presentations.
  • Office workers who frequently share screen captures in emails or documents.
  • Software developers and testers who require detailed screenshots for bug reporting and documentation.
  • Anyone looking for an easy-to-use, free, and reliable screenshot tool.

No analysis of UnionStack.ca yet.

Videos

Walkthroughs and reviews on video.

Greenshot 3 videos + Add
UnionStack.ca 0 videos + Add

My Greenshot Review 2017

More videos

  • - Complete Greenshot Tutorial for Beginners | Best Screen Capture Tool for Windows 10
  • - Greenshot Screenshot App Review

No UnionStack.ca videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Greenshot
UnionStack.ca
100% 100%
Screenshot Annotation
0% 0%
0% 0%
Membership Management
100% 100%
100% 100%
Screenshots
0% 0%
0% 0%
CRM
100% 100%

Questions & Answers

As answered by people managing Greenshot and UnionStack.ca.

Which are the primary technologies used for building your product?

UnionStack.ca's answer:

UnionStack is built with C# and ASP.NET Core on .NET 10, using PostgreSQL and Entity Framework Core for data management. Supporting technologies include Redis, SignalR for real-time updates, OpenIddict for authentication, Azure Blob Storage for documents, and Docker for deployment.

What's the story behind your product?

UnionStack.ca's answer:

UnionStack addresses a practical challenge: union work spans many connected records and responsibilities. A single member may hold multiple positions, participate in a grievance, attend meetings, and exchange correspondence with several representatives. UnionStack brings that context together to make everyday administration clearer and easier to coordinate.

How would you describe the primary audience of your product?

UnionStack.ca's answer:

UnionStack serves labour unions, including locals, regional bodies, and larger union organizations. Its primary users are union administrators, membership staff, representatives, grievance officers, and finance teams. Members use the portal to access relevant information and services

Why should a person choose your product over its competitors?

UnionStack.ca's answer:

UnionStack is a strong fit for unions seeking membership management, grievance tracking, communications, and member self-service in one platform. Its connected records help reduce fragmented information, while configurable workflows, reporting, and audit histories support consistent administration.

What makes your product unique?

UnionStack.ca's answer:

UnionStack connects the people, organizations, agreements, and casework behind everyday union operations. Member records link to positions, grievances, meetings, and correspondence, helping staff understand the full context while respecting access permissions. Configurable structures and workflows let unions reflect their own organization and terminology.

User comments

Share your experience with using Greenshot and UnionStack.ca. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Greenshot no reviews yet
UnionStack.ca no reviews yet
  • Top 13 Free Snagit Alternatives For 2021
    screenrec.com · Dec 2020

    Greenshot is a free and open source screen-capture tool that can serve as a Snagit free alternative for Windows 7. It is quite unfortunate that Greenshot is only compatible with Windows, but hey, it’s free, so we...

  • 15 Best Snagit Alternatives in 2020
    www.guru99.com · Aug 2020

    Greenshot is an open source screen capture tool. This tool allows you to quickly capture screenshots of a selected region, window, or entire screen. It also helps you to capture scrolling web pages from the Internet...

  • 30 Best Free Screen Capture Tools and Plugins
    www.hongkiat.com · Jun 2020

    Greenshot can capture any region on the screen or a web page and present the options to annotate or highlight parts of the shot. Interestingly, it provides an option to save the file or upload it to Flickr or Picasa....

We have no reviews of UnionStack.ca yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Greenshot 117 mentions
UnionStack.ca 0 mentions
  • Flameshot – Powerful, yet simple to use open-source screenshot software
    For the last 10(ish) years I've been using Greenshot [1]. I haven't found any issues with it but it is only available on Windows and Mac. [1] https://getgreenshot.org/. - Source: Hacker News / over 2 years ago
  • Help removing ads on https://getgreenshot.org/
    Just looking for filters to remove ad space on https://getgreenshot.org/. There is a space at the top on one on the right side. Thanks! Source: almost 3 years ago
  • How to get rid of the dialog box after print screen ?
    This is a program installed called Greenshot. It's a utility used for taking screenshots. If you want it to go away, you can uninstall greenshot. Source: almost 3 years ago

View more

Tracking UnionStack.ca since Sep 2026.

Alternatives to Greenshot and UnionStack.ca

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