Software Alternatives, Accelerators & Startups

Clozo VS Stackmasters

Compare Clozo VS Stackmasters and see what are their differences

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.

Clozo logo Clozo

EU-first invoicing for freelancers: proposal โ†’ e-signature โ†’ a valid e-invoice in your country's format, with EU VAT handled. Get paid via Stripe, SEPA or iDEAL.

Stackmasters logo Stackmasters

Stackmasters provides cloud management and application hosting solutions for private, public and...
  • Clozo Proposal builder with line items & EU VAT
    Proposal builder with line items & EU VAT //
    2026-06-04
  • Clozo One-click e-invoice: ZUGFeRD / Factur-X / Peppol
    One-click e-invoice: ZUGFeRD / Factur-X / Peppol //
    2026-06-04
  • Clozo Client signs the proposal online (EU e-signature)
    Client signs the proposal online (EU e-signature) //
    2026-06-04

Clozo automates the whole invoicing process for EU freelancers and micro-studios: send a proposal, get it e-signed (legally binding, with audit trail), and turn it into a valid e-invoice in your country's format โ€” XRechnung/ZUGFeRD (DE), Factur-X (FR), UBL/Peppol BIS (NL/BE), FacturaE (ES), ebInterface (AT) and FatturaPA (IT). EU VAT is handled automatically (live VIES validation + cross-border reverse-charge), and you can get paid in one link via Stripe (card, iDEAL, Bancontact) or SEPA. Plus recurring/retainer billing, time tracking that exports straight into an invoice, expense tracking with DATEV (GoBD-compliant) export, and full GDPR data export. Available in 6 languages. No transaction fees.

  • Stackmasters Landing page
    Landing page //
    2023-03-25

Clozo

$ Details
freemium โ‚ฌ12.0 / Monthly (Pro)
Release Date
2024 January
Startup details
Country
Spain
Founder(s)
Andrei Diachenko
Employees
1 - 9

Stackmasters

Pricing URL
-
$ Details
-
Release Date
-
Startup details
Country
Greece
City
Athens
Employees
1 - 9

Clozo features and specs

  • AI-Powered Contact Management
    Clozo leverages artificial intelligence to help users manage their personal and professional contacts more effectively, automatically organizing and enriching contact information.
  • Relationship Intelligence
    The platform provides relationship insights and reminders, helping users stay on top of their network by tracking interactions and suggesting when to follow up with contacts.
  • Unified Contact Hub
    Clozo consolidates contacts from multiple sources such as email, social media, and phone into a single unified platform, reducing fragmentation and duplicate entries.
  • Easy to Use Interface
    The application features a clean and intuitive user interface that makes it straightforward for users to navigate, search, and manage their contacts without a steep learning curve.
  • Smart Follow-Up Reminders
    Clozo helps users maintain relationships by providing intelligent reminders and nudges to reconnect with contacts they haven't been in touch with recently, preventing important relationships from going cold.

Stackmasters features and specs

  • Expertise in Cloud Solutions
    Stackmasters provides specialized cloud solutions, offering expertise in cloud architecture, deployment, and management across various platforms.
  • Customized Services
    They offer tailored cloud management services to fit specific business needs, ensuring that solutions are well-aligned with company goals.
  • Comprehensive Support
    Clients benefit from robust support, ensuring that any issues with cloud services are swiftly addressed.
  • Enhanced Security
    Stackmasters emphasizes security in their cloud solutions, helping businesses maintain compliance and protect sensitive data.
  • Proven Track Record
    The company has a history of successful projects and satisfied customers, providing credibility and reassurance to potential clients.

Possible disadvantages of Stackmasters

  • Cost Considerations
    Professional cloud management services can come at a premium, which may be a constraint for smaller businesses or those with tight budgets.
  • Limited Physical Presence
    Depending on the desired level of on-site support, clients may find the physical presence of Stackmasters limited, depending on their location.
  • Complexity of Implementation
    Transitioning to or managing cloud solutions can be complex, requiring significant collaboration and potential adjustment periods.
  • Dependence on Internet Connectivity
    As with any cloud-based services, optimal functionality depends heavily on reliable internet connectivity, which can be a risk in some areas.

Analysis of Clozo

Overall verdict

  • Clozo appears to be a useful tool for its intended purpose, offering a streamlined and accessible experience for users looking to improve productivity and workflow management, though prospective users should verify current features and pricing directly.

Why this product is good

  • Provides a focused solution aimed at simplifying specific tasks or workflows
  • Web-based accessibility means no complex installation is required
  • Designed with an emphasis on ease of use and a clean user interface
  • Potentially cost-effective for individuals and small teams looking for lightweight tools

Recommended for

  • Individuals seeking a simple productivity or workflow tool
  • Small teams and startups needing an accessible web-based solution
  • Users who prefer lightweight apps over feature-heavy enterprise software
  • Anyone wanting to trial a tool with minimal setup before committing

Category Popularity

0-100% (relative to Clozo and Stackmasters)
Invoicing
100 100%
0% 0
Monitoring Tools
0 0%
100% 100
Accounting
100 100%
0% 0
Cloud Infrastructure
0 0%
100% 100

Questions & Answers

As answered by people managing Clozo and Stackmasters.

What makes your product unique?

Clozo's answer

Clozo is built EU-first. It combines a proposal, a legally-binding e-signature and online payment in a single link, while turning every invoice into a fully compliant e-invoice in one click โ€” ZUGFeRD (DE), Factur-X (FR), Peppol UBL (NL/BE), FacturaE (ES), ebInterface (AT) and FatturaPA (IT). It validates the client's EU VAT against the VIES database live and applies cross-border reverse-charge automatically, so freelancers stay compliant with the 2025โ€“2028 EU e-invoicing mandates without an accountant. Payments work the European way too: iDEAL, Bancontact and SEPA, with no transaction fees.

Why should a person choose your product over its competitors?

Clozo's answer

Unlike generic invoicing tools such as FreshBooks, Zoho Invoice or Invoice Ninja, Clozo is designed around EU compliance and European payment habits. You get live VIES VAT validation, automatic cross-border reverse-charge, and one-click country-correct e-invoices (ZUGFeRD, Factur-X, Peppol UBL, FacturaE, ebInterface, FatturaPA) โ€” ready for the national e-invoicing mandates. It supports iDEAL, Bancontact and SEPA out of the box, covers the whole quote-to-cash flow in one link (proposal โ†’ e-signature โ†’ deposit โ†’ final invoice), ships in 6 EU languages, and charges no transaction fees.

How would you describe the primary audience of your product?

Clozo's answer

EU freelancers and micro-studios โ€” designers, developers, consultants and other independents โ€” who invoice B2B and cross-border within the EU and need to stay compliant with national e-invoicing mandates without hiring an accountant. Clozo ships in English, German, Dutch, French, Spanish and Polish, matching its core markets: the Netherlands, Belgium, France, Germany, Spain and Poland.

What's the story behind your product?

Clozo's answer

Clozo started as a personal tool. My friends and I freelance, and every month we hit the same friction โ€” slow, repetitive invoicing, files scattered everywhere, payments hard to track, and no clear picture of our own expenses. I automated the workflow for myself and a few friends; once we saw how much time it saved, we decided to build it properly. The result is Clozo: one link that carries a proposal, a legally-binding e-signature and online payment, with a clear view of who paid and what's still outstanding โ€” built by freelancers, for freelancers, starting with ourselves.

User comments

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What are some alternatives?

When comparing Clozo and Stackmasters, you can also consider the following products

EasyBilling - EasyBilling: Create professional invoices, quotes, receipts & delivery notes quickly. Customize templates, generate reports, manage multiple companies. One-time purchase, 30-day guarantee.

FreshBooks - The ideal accounting software for small business owners.

Zoho Invoice - 100% free online invoicing software for small businesses.

Invoice Quick - Streamlined Professional Invoicing, Made Quick and Easy

Invoice Ninja - Invoice Ninja is a free, open-source solution for invoicing and billing customers.

Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.