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Stealth healthcare startup working on a patient-directed research platform, starting by “finding an effective opioid alternative to fight the opioid crisis.”

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“Manufacturing intelligence company” using machine learning to help engineers source low-volume parts manufacturing and see how costs are determined.

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Boston Startups Guide started five years ago as a simple directory of startup companies in Boston. Now that startup list has grown to a well-curated (no services companies, no zombie startups, no yet-another-ecommerce sites) resource for finding innovation happening in your industry, and the latest in Boston tech. New startups are added regularly.