Multiple concurrent projects competing for shared resources is at the very focus of Multi-Project-Planner.
The project activities are booked on a schedule, common to all work teams. I.e. the Gantt charts of the projects are superimposed upon this common schedule. This way both resource allocation and the interrelationships between the activities are handled in one and the same view.
Look and feel of the familiar planning board.

HS Task Planner is information management and planning software. It allows users to create, delete, edit and organize tasks in a tree-like hierarchical structure. Hs Task Planner operates on project task files, The user can load previously saved project file and continue working on the project. Hs Task Planner offers some of the basic features found in expensive project management packages for a very low price.

FusionDesk is lightweight project management and time tracking software for individuals and small teams. It offers advanced functionality hidden behind a simple and elegant user interface. Its flexibility allows you to keep working your way yet become more productive.

Other features:
Full Undo and Redo
Reminders for each task
Time Tracking
Project Estimates
Time Reports
Organize task in folders
Filter by Tags & Context
Customizable

NasPlan is an easy multi user scheduling tool which uses the Gantt principle. NasPlan uses projects, tasks, employees and pieces of equipment to create a schedule. The direct feedback when modifying the schedule makes the possibility of an error really small. The different reports give an accurate view of the work your employees are doing and when they should be finished.

Deliver software solutions to specification, on time and on budget with this powerful change management / configuration management / help desk solution. Tracks functional specifications / test cases / bugs and issues via the web.

IPSO is a unique real-time, multi-user, multi-level project management tool with its own critical path project planning, time-recording, document and resource management functions. It also provides sophisticated reporting including advanced filtering criteria. Other features include multiple assignments for tasks e.g.attending meetings, fire drills,etc. It can be used locally and via a LAN, WAN or the Internet.

Software Planner helps you to improve the quality of your software releases and decrease software maintenance costs by providing you with tools for managing all phases of the software lifecycle. It includes the ability to track functional specifications, project deliverables, appointments, to do lists, test cases, and software defects. Also allows your team to collaborate by sharing documents and participating in discussion forums. Web-based.

AccuPlan is simple to use, yet powerful and feature rich software. Many of its features are only available in very expensive software packages. AccuPlan will let you carve the path to successful implementation and management of projects and processes, and let you optimize your time and resources. AccuPlan helps you effortlessly manage tasks, resources, budgets and timelines.

RationalPlan by StandBySoft is a powerful project management software designed as an affordable alternative to Microsoft Project. The application is covering project management area from WBS construction, project planning and scheduling to critical path management, overallocated resources detection, progress tracking, cost estimation, etc. Gantt chart support as well as various time line reports are also provided.

RationalPlan is a great alternative to Microsoft Project with some extra-features like multiproject management (only for Multi Project version). It offers you the most important capabilities of a good project management software while beeing able to operate on various platforms starting with Windows, Mac, Linux and all other Java enabled platforms.

Tree Notes is a universal, very user friendly and powerful note manager that organizes your notes in a neat tree.

You can use it as a planning tool, project management tool, personal information manager (PIM), to-do manager, journal or any kind of text archive. Effortlessly store your notes, ideas, reports, contacts, lists and things you shouldn't forget in a fashionable manner with a style!

RiskyProject Lite is project management software with integrated risk analysis. RiskyProject Lite helps project managers to plan the project and determine how risks will affect project schedules. RiskyProject allows the manager to create project schedule and risks or import them from other project management software, perform quantitative risk analysis, and track project performance with risks and uncertainties.

RiskyProject is advanced project management software with integrated risk analysis. Project managers can use RiskyProject for planning, scheduling, quantitative risk analysis, and performance measurement of projects with multiple risks and uncertainties. RiskyProject allows managers to improve their ability to predict the course of projects and determine how risks and uncertainties will affect the project.

RationalPlan Project Viewer by Stand By Soft is a free project management software viewer, the perfect solution for anyone (from project stakeholders to team workers) to view your projects in detail. Usually project managers plan and control the projects from start to end and make the necessary changes. However, there are some other people (like stakeholders) that have to check and overview the projects evolution into their smallest detail.