1. 1. Pre PC/Internet
   1. Pen and Paper
   2. Typewriter
2. 2. PC/Internet
   1. Office tools (Word, Excel, Zotero)
   2. Web search engine
3. 3. Software Dependency
   1. GIS
   2. SNA
   3. Other...
   4. Fragmented Environment
4. 4. Programming
   1. R Studio
   2. Python
5. 4. Machine-learning
6. Online Archives
7. Digital-born Archives
8. Digitized Archives
9. Archives in Print
10. Libraries (Physical)
11. Archival Centers (Physical)
12. Online Catalog
13. Books
    1. Print
    2. E-books
14. Academic Journals
    1. Print
    2. Online journals
15. Multimedia scholarship
    1. Research blogs
    2. Digital platforms
    3. Datasets (Zenodo)
    4. Documentation
       1. Markdown
       2. Jupiter
       3. Other
16. Integrated Environment