• Trello icon


    Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture...

    Freemium Web / Cloud Android iPhone Windows RT Android Tablet Windows Phone ... iPad Apple Watch Android Wear Kindle Fire

  • Asana icon


    Asana is the easiest way for teams to track their work so they can get results. It’s free to use, simple to get started, and powerful...

    Freemium Web / Cloud Android iPhone

  • Odoo icon


    Odoo (formerly OpenERP) is a suite of open-source business apps written in Python and distributed under the AGPL license. It is used...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet Windows Phone iPad Self-Hosted

  • Basecamp icon


    Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and...

    Commercial Web / Cloud

  • InvoicePlane icon


    InvoicePlane is a self-hosted open source application for managing your quotes, invoices, clients and payments. The application comes...

    Open Source Mac Windows Linux Web / Cloud Self-Hosted

  • BILLmanager icon


    BILLmanager is a highly customizable and flexible billing platform for hosting businesses with full scope of functionality for client...

    Commercial Windows Linux Web / Cloud Android iPhone iPad ... cPanel VM manager Parallels Plesk Panel ISPmanager

  • fluxday icon


    Opensource task & productivity management tool for startups, engineered based on the concepts of OKR. In fluxday, you can start...

    Open Source Mac Windows Linux MySQL Community Edition Self-Hosted MariaDB ... Ruby

  • FusionInvoice icon


    FusionInvoice is an open source invoicing, quotes, and client management application built for freelancers and small businesses who...

    Commercial Mac Windows Linux Web / Cloud Self-Hosted PHP

  • BeachCandy icon


    BeachCandy is an online invoice creator. It's easy to use and handy for small businesses.

    Freemium Web / Cloud

  • Invoicera icon


    Invoicera is an online billing software which is specifically designed keeping simplicity and online invoicing convenience in mind...

    Freemium Web / Cloud

  • 17hats icon


    Say goodbye to chaos and hello to organization! Tame the chaos of your business with one brilliant app. The all-in-one business...

    Freemium Web / Cloud

  • WeDo icon


    WeDo is a simple todo list app for you and your friends, family and co-workers to get things done. With each set of people, known as a...

    Free Mac iPhone

  • Know any more alternatives to Duet?

    Suggest an application to this list
  • Billings Pro icon

    Billings Pro

    Billings is being merged with Billings Pro. Billings Pro is an award winning invoicing and time tracking solution. Built for small...

    Freemium Mac iPhone

  • billfaster icon


    billfaster is easy-to-use cloud accounting software for startups and small business. billfaster provides simple yet highly...

    Commercial Mac Windows Web / Cloud Chrome OS Android Tablet iPad

  • Proofhub icon


    ProofHub is web based project management software and online collaboration tool that helps to manage, discuss and communicate projects...

    Commercial Web / Cloud Android Chrome OS

  • Motiv icon


    Motiv is an all-in-one, cloud based business management platform. It combines various tools that every freelancer needs, allowing the...

    Commercial Mac Windows Web / Cloud

  • Ronin icon


    Online invoicing, client management, and time tracking web application for freelance, creative professionals, and small businesses.

    Freemium Web / Cloud

  • Siwapp icon


    An open source web application meant to help manage & create invoices in a simple, straightforward way.

    Open Source Web / Cloud

  • Share this list of alternatives?

  • Billomat icon


    Billomat Online Invoicing Tool is a perfect choise for every freelancer and small bussiness even for non-accountants. The Billomat...

    Freemium Web / Cloud

  • Sushi icon


    A central place for your freelancing life. Small businesses, we love you. Get your projects finished, shipped and billed. Stay...

    Commercial Mac Web / Cloud

  • iObeya icon


    As simple to use as the sticky notes, laminated cards, T-cards, magnets, stickers and pens used in your meeting rituals today.

    Commercial Mac Windows Web / Cloud

  • Hexnode Projects icon

    Hexnode Projects

    Hexnode projects is an online project management and collaboration tool .Our product helps you plan, organize and track all your...

    Commercial Web / Cloud Self-Hosted

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