# Ponder > Ponder (ponder.ing) is an all-in-one AI knowledge workspace built for research and deep thinking. It combines multi-format ingestion (PDFs, web pages, videos, text), an infinite canvas for visual knowledge mapping, academic literature search, and a conversational AI research partner — so researchers, PhD students, and analysts can read, connect, synthesize, and cite sources in one place instead of switching between tools. ## Core - [Ponder — AI Knowledge Workspace](https://ponder.ing/): Product overview, key features, and who it's for. - [Pricing](https://ponder.ing/pricing): Free, Casual, Plus, and Pro plans. - [Features overview](https://ponder.ing/features): Full index of Ponder's capabilities. ## Academic & Research Features - [Literature Review Evidence Map](https://ponder.ing/features/literature-review-evidence-map-ai): Build evidence maps from a body of literature. - [Systematic Review Evidence Map](https://ponder.ing/features/systematic-review-evidence-map-generator): Structure systematic reviews visually. - [AI Research Tool](https://ponder.ing/features/ai-research-tool): All-in-one academic research assistant. - [Citation Network Visualizer](https://ponder.ing/features/ai-tool-visualizing-citation-networks): See how papers cite and relate to each other. - [PhD Thesis Concept Map](https://ponder.ing/features/phd-thesis-concept-map-generator): Map thesis arguments and concepts. ## Guides & Comparisons - [Best AI Tools for Literature Review](https://ponder.ing/blog/ai-research-tools-for-literature-review): Tools and workflow for literature review. - [NotebookLM Alternatives](https://ponder.ing/blog/notebooklm-alternatives): Top alternatives to Google NotebookLM. - [SciSpace Alternatives](https://ponder.ing/blog/explore-the-best-alternatives): Best alternatives to SciSpace for research. - [Elicit Alternatives](https://ponder.ing/blog/top-alternatives-to-elicit): Best alternatives to Elicit for research. - [Best AI Research Tools for Students 2026](https://ponder.ing/blog/best-ai-research-tools-for-students-2026): Curated tools for student researchers. ## Optional - [Blog](https://ponder.ing/blog): All articles — product comparisons, research guides, and tutorials.