Best Slottr Alternatives & Competitors in 2025

Track your tasks and projects in a plain text file, todo.txt. A todo.

Key Todo.txt features:

Simplicity Portability Customizability Tool Compatibility

Open Source

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.

Key EssentialPIM features:

Comprehensive Feature Set Cross-platform Compatibility User-Friendly Interface Security Features

paid Free Trial $39.95 / One-off

Seamless project management and collaboration for your team.

Key Hive features:

Free Trial Integrations File sharing Easy to Set-up and use

Visit website $12.0 / Monthly (Per user)

Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.

Key Task Coach features:

Multi-platform support Free and Open Source Hierarchical Task Organization Customizable Attributes

Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.

Key Strikethru features:

Simplicity Focused Prioritization Flexibility Encourages Reflection

A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.

Key CherryTree features:

Rich Text Formatting Hierarchical Note Structure Cross-Platform Support Syntax Highlighting

About Us.

Key GTDNext features:

Comprehensive GTD Implementation Project and Task Hierarchies Context and Tagging System Flexible Organization

MeisterTask is an intuitive task management and collaboration tool.

Key Meistertask features:

User-Friendly Interface Integration with MindMeister Task Automation Customization Options

DropTask is a workspace to manage projects, tasks and to-dos both individually or as a team.

Key DropTask features:

Visual Task Management Collaborative Features User-Friendly Interface Integration Capabilities

FacileThings is a web application that provides you with the best structure and workflow to get things done.

Key FacileThings features:

GTD (Getting Things Done) Methodology User Interface Integration Capabilities Comprehensive Task Management Features

paid Free Trial $12.0 / Monthly

Moo.do Application.

Key Moo.do features:

All-in-One Workspace Hierarchical Task Management Google Integration Offline Access

Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.

Key Google Keep features:

Cross-Platform Accessibility Integration with Google Ecosystem Real-Time Collaboration Voice Notes

Todoist is a to-do list that helps you get organized, at work and in life.

Key Todoist features:

Cross-Platform Availability Collaboration Features User-Friendly Interface Advanced Task Management

A professional list-making tool. Minimalist, keyboard-centric online outliner and task management application. Free sharing, unlimited lists, cross-linking, free import and export. Markdown support. Created for geeks 🤓 and all keyboard lovers ⌨️.

Key Checkvist features:

Search and Filtering Email-in-tasks Tags Priorities

freemium $3.9 / Monthly (PRO)