What is an enterprise agile planning tool?
Products that enable organizations to scale agile practices and provide a comprehensive enterprise view for the definition, planning and management of work. These tools evolved from project/team-centric tools to support a business-outcome-driven approach to managing agile software development.
What capabilities do these tools provide?
Project portfolio management
Strategic portfolio management
Value stream management
Value stream delivery
What are different organizational needs which these tools fulfill?
Monthly, weekly and even daily incremental value delivery based on business outcomes
Support for enterprise agile frameworks like Scaled Agile Framework (SAFe)
Product roadmapping
Increased visibility into the flow of work
Management of work backlogs
Collaboration capabilities for individuals and teams
Management of cross-team dependencies
Release planning and forecasting
Visibility into the financial aspects of the work being done

What are key Enterprise Agile Planning Tools?
JIRA Align - provides integrated support for multiple agile frameworks. Provides end-to-end visibility, traceability and insight into the flow of all product delivery processes, tying that all back through the value stream for efficiency
Rally and Clarity from Broadcom - Focus on enterprise-scaled agile (Rally) supported by portfolio planning and management capabilities (Clarity). Improvements in capex tracking capabilities and integration with third-party tools.
Digital.ai Agility - Full support for enterprise agile frameworks such as SAFe, LeSS and DAD. Merger of CollabNet VersionOne, XebiaLabs, Experitest, Numerify and Arxan Technologies to form Digital.ai
Digité - SwiftKanban, SwiftEASe and SwiftEnterprise products are focused on providing support for SAFe with an emphasis on strong Kanban capabilities.
Favor - Enterprise level agility, success in SaaS and Video Game industry, enterprise grade security, integration.
Gitlab - Good for organizations managing product portfolios, all remote philosophy, developed by community. Limited support for SaaS
IBM Engineering Workflow Management - Good support for SAFe.
Infectra - SpiraTest (team), SpiraTeam (project) and SpiraPlan (enterprise). Inflectra provides a solution for a regulated environment requiring traceability from requirements to tests.
Azure Boards - Direct integration with Github Enterprise
Planisware - Planisware Enterprise and Planisware Orchestra tools are focused on a project and portfolio management (PPM)-based approach to enterprise-scale agile.
Planview - Planview Enterprise One and Planview LeanKit are two products. Support for collaboration, objectives and key results (OKRs), product roadmapping and product-based dashboards.
ServiceNow IT Business Management (ITBM) - Support for SAFe, AI/ML, integration with Azure Pipelines, Gitlab etc.
Siemens - Polarion ALM and Polarion X. Polarion is well-suited for creating systems in a quality-sensitive, heavily regulated environment using agile methods. Organizations in regulated environments, and whose processes are subject to audit, emphasis on quality engineering and traceability.
Targetprocess
TCS Jile - TCS’s product roadmap for Jile is ambitious, encompassing enhanced portfolio management, Jile marketplace, Jile community and the incorporation of cognitive and other AI technologies.
Reference: https://www.gartner.com/doc/reprints?id=1-25YSX6JD&ct=210504&st=sb
good list