If you're seeking a PromptBox alternative, Template Prompts is a good option. This tool lets you organize and customize complex AI prompts so you can reuse them in different tools and situations. You can create templates with variables, store them in a private library with tags, and easily modify them for different contexts. It supports more than 70 AI tools, including ChatGPT, Midjourney and Stable Diffusion, and offers a free plan with paid upgrades.
Another PromptBox alternative is PromptDrive. This service is geared for team collaboration and includes a full prompt management system. You can create, share and refine prompts through its web app, which includes folders, tags and permissions for organization. The Chrome extension lets you access prompts in supported AI tools. PromptDrive offers four pricing tiers, including a free plan for personal use, so it should accommodate a range of collaboration levels and AI tool usage.
Both of these tools are good PromptBox alternatives, with features that enable powerful prompt management and customization that can help you work more efficiently and productively.